Two dustbin Bags:

A little old lady is walking down the street dragging 2 plastic dustbin bags with her, one in each hand. There's a hole in one of the bags and every once in a while a £10 note is flying out of it onto the pavement.
Noticing this, a policeman stops her. "Ma'am, there are £10 notes falling out of that bag."
"Damn!" says the little old lady... "I'd better go back and see if I can still find some. Thanks for the warning!"
"Well, now, not so fast," says the policeman, "How did you get all that money? Did you steal it?"
"Oh, no", says the little old lady. "You see, my back yard backs onto man united's ground. Each time there's a game; a lot of fans come & **** in the bushes & right into my flower beds! So, I go & stand behind the bushes with a big hedge clipper. Each time someone sticks his nudger through the bushes, I say £10 or off it comes!"
"Hey, not a bad idea!" laughs the cop. "Ok, good luck! By the way, what's in the other bag?"
"Well," says the little old lady, "some guys think I'm bluffing."