Two Polish guys are discussing one's upcoming wedding.

"I'm not sure if my future bride is a virgin or not."

His buddy replies, "Oh, there's an easy test for that. All you need is some red paint, some blue paint and a shovel. You paint one ball red and one ball blue. On your honeymoon, if she laughs and says, 'Those arethe funniest balls I've ever seen!' you hit her with the shovel!"