I bet the checkout operator wishes she had a pound for every time shes heard that one alba, probably happens 20 times a day. Silly things I'd like to do? Say "don't worry, I will pick it up" every time it see someone drop litter. Ignore someone who asks me a question then expects me to wait while they finish their phone conversation for an answer. Say "you're welcome" when someone doesn't say "thank you". And when someone's child is running riot, and it's parent tells it not to do that because "this lady will shout at you" I would love to say "no she won't, it's your child - YOU shout at it" !!!!!
(actually, I have done a couple of those)