We’ve all been there. You’re standing in the checkout line, tired after a long day, just trying to get home. Your arms are aching from holding that basket a little too long. Then it happens. The person in front of you does that thing. You know the one. Your eye twitches.
Long waits at the checkout are the top complaint among grocery shoppers, and it turns out a huge chunk of that frustration doesn’t come from the store itself. It comes from other people. According to RRD’s 2024 CPG + Grocery Consumer Report, which interviewed over 1,800 consumers, the vast majority of shoppers are frustrated with the grocery experience overall. So let’s be real about the behaviors that are secretly driving everyone around you absolutely nuts.
1. Ignoring the Express Lane Item Limit
Honestly, this one might be the most universally despised checkout sin in existence. That express lane with the “10 items or less” sign isn’t just a suggestion. When you roll up with a cart full of groceries in the express lane, you’re creating a bottleneck that affects everyone behind you, because express lanes are designed for quick transactions.
Target actually took formal action on this, limiting self-checkout to customers with ten items or fewer as recently as March 2024. The stores themselves are fighting back. That should tell you something.
Using the express lane with more items than allowed is simply inconsiderate to those following the rules, it slows down everyone’s checkout process, and respecting the item limit is what keeps things moving efficiently. It’s a small thing with a big ripple effect on everyone in that store.
2. Waiting Until Everything Is Scanned to Find Your Wallet
I think this one genuinely baffles people standing in line. Did you not know you were going to have to pay? We’ve all been stuck behind someone who acts surprised when it’s time to pay. Waiting until everything is scanned to dig through a purse or wallet for payment slows down the entire process, which is especially frustrating during busy times when lines are long.
When you wait until the last second to look for your card or count out exact change, you put the whole checkout lane on pause. Cashiers appreciate shoppers who have payment methods ready to go, meaning your coupons, loyalty cards, and payment should be accessible before reaching the register. If you’re using a card, inserting it into the reader as soon as possible rather than waiting for all items to be scanned makes a real difference.
3. Bringing a Full Cart to Self-Checkout
Self-checkout is a beautiful invention when used correctly. Think of it like a bicycle lane on a highway. It works great for what it’s meant for. Self-checkout lanes now make up roughly four in ten of all checkout options in US grocery stores, but they weren’t designed for every type of purchase. Bringing a cart overflowing with groceries to self-checkout creates multiple problems, as these systems are programmed with weight sensors and timing expectations based on typical small to medium purchases, and large orders often trigger errors that require staff intervention.
Store employees who monitor self-checkout areas report that oversized orders are among their biggest frustrations. Self-checkout is ideal for 10 to 15 items at most, particularly when you’re familiar with the system, and for larger orders, traditional checkout lanes with trained cashiers are much more efficient.
4. Paying With a Checkbook
If you’re in a rush at the grocery store, there’s no more dreadful sight than the person in front of you pulling out a checkbook to pay. It’s 2026. The checkout line is not the time for nostalgia. A checkbook at the register is like someone showing up to a Formula 1 race in a horse and cart. Charming, maybe. Fast, absolutely not.
Each customer’s actions at the register are termed “tender time,” and every one of those seconds adds up. Scanning items is actually the fast part of any checkout. The payment process is where things grind to a halt, and writing a check is the slowest version of that grind possible.
5. Having a Full Phone Conversation While Checking Out
Here’s the thing. Everyone can hear you. The cashier can hear you. The person three lanes over can hear you. With roughly a third of shoppers already reporting frustration with waiting in checkout lines, being ignored by the person you’re supposed to be handing money to is a special kind of aggravating.
Checkout staff are human beings trying to do their job efficiently. When a shopper is deep in conversation and can’t answer basic questions like “do you have your loyalty card?” or “cash or card?”, the whole transaction takes longer. It’s hard to say for sure exactly how many seconds each phone call adds, but anyone who has stood behind a chatterer knows it feels like a lifetime. Common courtesy goes a very long way here.
6. Unloading Items Agonizingly Slowly onto the Conveyor Belt
There’s a rhythm to the grocery checkout. You load. The cashier scans. You pack. You pay. When someone breaks that rhythm by placing items onto the belt one at a time, slowly, with pauses in between, the whole system stutters. Research into checkout efficiency has found that for every person standing in line, an additional 48 seconds is added to your wait time, meaning that even the smallest delays compound quickly when a line is five people deep.
Think of the conveyor belt like a river. Keep the water flowing. Dumping your bag out slowly, one yogurt at a time, is like stopping that river with your hand. The people behind you feel every single second of it, and they are not thrilled.
7. Forgetting to Enter a Loyalty Card or Coupon Until After Payment
Coupons are great. Loyalty cards save real money. Nobody disputes that. The problem is when someone completes the entire payment process, gets a receipt, and then suddenly remembers they have a stack of coupons at the bottom of their bag. According to LendingTree survey data, nearly half of American shoppers are now buying more generic brands and roughly four in ten are actively sticking to their grocery lists to manage rising costs. Price awareness is at an all-time high, which means more coupons in play at checkout than ever before.
The courteous move is to have everything ready before the first item is scanned. Digging for a crumpled paper coupon after the transaction is complete, or asking the cashier to void and redo the whole thing, is the kind of thing that makes the person behind you quietly lose the will to live. Be organized. Your wallet and the line behind you will both thank you.
8. Leaving to Grab a Forgotten Item Mid-Checkout
You’ve loaded your items. The cashier has started scanning. Everyone is committed. Then you say “Oh wait, I forgot the milk!” and vanish into the store. What follows is an awkward limbo for the cashier and everyone waiting behind you. The transaction is paused, items pile up on the belt, and nobody knows quite what to do.
Above all, consumers want convenience when they shop for groceries, and according to a Deloitte survey, their top in-store priority for convenience is faster checkouts. Running back into the store mid-transaction is the single fastest way to undermine that. Do a quick mental scan of your list before you join a line. It takes ten seconds and saves everyone several minutes.
9. Refusing to Bag Items While the Cashier Scans
Some people stand at the end of the checkout counter with their arms folded, staring blankly, while the cashier both scans and bags every single item alone. This one genuinely puzzles me. It’s a team sport. Grocers have been trying to use automation to make checkout faster, but with mixed results, which means the human side of the transaction matters more than ever for keeping lines moving smoothly.
When a shopper bags their own items while the cashier scans, the checkout process becomes dramatically more efficient. It’s not a huge ask. Think of it as a relay race. The baton needs to keep moving between both runners. Standing still and watching someone else do all the work is the grocery equivalent of dropping the baton entirely.
10. Starting a Lengthy Price Dispute at the Register
Prices matter. Mistakes happen. Disputing a price is sometimes completely justified. Of 1,819 shoppers surveyed by RRD, 86% said that rising grocery prices made them frustrated, with 80% citing elevated food and beverage pricing specifically and nearly half saying they are “very frustrated.” That frustration is real and understandable. Price sensitivity is at historic levels in 2026.
Still, the checkout line is not the ideal venue for a prolonged negotiation. A full-blown debate over a 30-cent discrepancy, while six people stand waiting behind you, tests everyone’s patience to its limit. Most stores have a customer service desk specifically for that purpose. Noting the issue and resolving it separately keeps everyone moving and preserves your dignity in the process.
Think of the checkout line as a shared resource. Like a shared lane on a motorway, it only works when everyone respects the rules. A small moment of self-awareness, having your card ready, respecting the express lane limit, or simply bagging your own groceries, can make a big difference in the checkout experience for everyone, because having your payment ready, respecting personal space, and following express lane rules aren’t just good manners. They help the whole system work better for all of us. Next time you’re loading that conveyor belt, spare a thought for the six people standing behind you. They’re hungry too.
What do you think? Are you guilty of any of these? Tell us in the comments.
