(I’m finishing a long transaction for a supermarket customer.)

Customer: “You realise that you didn’t say ‘please or ‘thank you’ throughout all of that?!”

Me: “I’m sorry, but I thought I did.”

Customer: “Do you go to college or is this your full time job?!’

Me: “I go to college, but–”

Customer: “GOOD! DON’T DO THIS FOR THE REST OF YOUR LIFE BECAUSE YOU’RE ABSOLUTELY CRAP AT IT!”