Till staff in Sainsburys asking if you want a bag when you are holding a bright orange bag in your hand. And why do some say "a bag is 5p. Is that alright ?". What if you say "No it's not f***ing alright" ?
Till staff who ask how many bags I think I'll need. I go food shopping once a week - I've got no f***ing idea how many is a realistic number. They should have a decent idea themseles really; it's just about the only thing they need to know. Idiots.