Pretty funny, but that first one - I have been the cashier asking someone to sign their credit card! We are not allowed to accept unsigned cards as payment, so I have to ask them to sign it in my presence. (I wouldn't be so dumb as to then compare the signature on the sales slip, since obviously it would be an exact match.) Then I have to ask for something else with their signature on it, to make sure it's really their signature and credit card. To me, an idiot is someone who has an unsigned credit card on them - just asking for it to be stolen and the signature forged on it! (I had one lady thank me the other day for noticing that it wasn't signed - she said she had used it for weeks and nobody else had said anything!)

As far as the job change - it's hard to find a job where you won't have to deal with a single other human being - so we just laugh off the stress of dealing with boneheads!