Mr. Goldfarb was walking down the street. In each arm he carried a bag. He ran into Mr. Klein.

Mr. Klein asked, "What are those bags for?"

"I'm collecting for Israel", said Mr. Goldfarb.

"You need two bags?" asked Mr. Klein.

"I've got a system, said Mr. Goldfarb. It's fantastic. I go into the men's room. I pull out a knife and hold it up. Then I say, 'Give for Israel or get a circumcision.' It works. I have 40 thousand dollars in this bag."

"What do you have in the other bag?" inquired Mr. Klein.

"Oh, well, not everybody gives."