People who turn shopping into family day out. Kids crawling everywhere, entourage like for audience with Pope, motorcade of trolleys parked across five isles, everyone chatting away in the middle of frozen food section like they had no living room.
"Runner" kids - you know - the chavy little clever **** sent by mummy to run and cut you up in a queue at the till, just for her to arrive after 10 minutes, at the last moment with flipping piles of white label beer across 5 trolleys expecting everyone to clear the belt and make space.
Cretins that break multiple item packets and then insist on stalling the checkout queue demanding on Customer Service "CSI" unit to play fetch and browse - sending them to the most distant shelves and back just for them to return with nothing unable to verify price.
Unexpected items in bagging area.
"Clever" people who put alcohol or DVDs on self checkout scales, weight them up as carrots and then get all dramatic and shirty when the tag sets off alarm and spawns security. It's that massive, bulky pin or label on top of the bottle, you're not exactly interpol most wanted list material love, please just stop trying.
The shy "lunch buyer" types that change their mind at the last moment, but instead of leaving unwanted item on the till they abandon it in their basket and play dumb, five seconds later the coleslaw/strawberries/ice cream/cottage cheese/whathave you gets flattened by the next basket, splat, **** everywhere, shoes, trousers in someone else's rejected lunch. Why? Why do that?!
Sainsbury's Cafe staff near where we work has this great way of winding everyone up:
"I'll have the poached salmon with new potatoes and salad, no sauce and a regular latte please"
"Poached salmon or salmon fishcakes?"
"poached salmon."
"New potatoes or chips?"
"Potatoes"
"Green peas or salad?"
"Salad please. And a latte. Regular"
"Lemon and dill or cucumber sauce?"
"No sauce"
"Lemon sauce?"
"No sauce, none at all"
"No sauce?"
"Yes"
"Any drinks?"
(grabs a fork, aims at eyeballs) hack - hack - hack