I hate it when you buy a weeks worth of shopping at the supermarket and when you get to the till they ask if you want any bags !! 
nah ive got big pockets !! 
they have even stopped asking you at my local supermarket if you want cashback, so they scan all your items and whilst you are still packing them they will say " that will be…" so if you then say you would like cashback they say " well why didnt you ask for it before i finished scanning your items ? "
because i was busy still packing my bags ya numpty !! 