I NEVER have.
I can't tell you how many times a day people will be short a few cents (9 times out of 10 it is for cigarettes) and they will ask me if I have some change to loan them. If I gave everybody money that asked me for it I would be LOSING money at the end of the day.
For those of you who don't already know it, a cashier makes less money than almost anybody in the food chain.
PAY FOR YOUR OWN SHIT! IF YOU DON'T HAVE ENOUGH MONEY THEN PUT SOMETHING BACK - THAT'S WHAT I DO.