for work - I do market research, and we had people test drive prototypes. We offer compensation in cash... couple hundred bucks to let us badger you with questions for a couple hours. Normally we have the security guy hold all the cash, but one particular night - I held it. Was a little unnerving, 1) it wasn't my money and I sure as hell could have used it. 2) it was a lot of money - and certain people knew I had it on me - who could be stupid and tell someone else.. etc.

wasn't my favorite thing to do.