You've probably all heard this before, but here goes:
A bunch of guys are playing cards in some Vegas casino when a guy rushes up to the table asking to borrow money. They all recognise him because he's always in there losing money, but this time he is really begging.
"Please guys, my wife has just been hit by a car and I don't have any insurance. Please can someone just lend me a hundred bucks for an ambulance."
The players have heard it all before, so they just carry on playing, but the guy won't give up:
"Please believe me, she's bleeding to death and I just need to borrow $100 to get her to a hospital."
Finally one of the other guys pipes up:
"If we lend you the money, how do we know you're not just going to gamble it away like you usually do?"
"Don't worry about that", replies the guy, reaching into his pocket and pulling out a wad of hundred dollar bills, "I've got my gambling money here!"
Sorry...