I know this is probability an 'Urban Legend" but I still can' stop laughing.
A thief burst into a Florida bank one day wearing a ski mask and
carrying a gun. Aiming his gun at the guard, the thief yelled,
"FREEZE, YOU MOTHER-STICKERS, THIS IS A F***-UP!"
For a moment, everyone was silent. Then the snickers started. The security guard completely lost it and doubled over laughing.
The thief ran away and is still at large. In memory of the event, the banker later put a plaque with the now famous demand.