Virginity Check

A young man was  planning to get married and asked his doctor how he could tell if  his bride is a virgin.

The doctor  said, 'Well, you need three things. A can of red paint, a  can of blue paint and a shovel..'

The man was  astonished and asked, 'So what do I do with these?'

The doc  replied, 'Before the wedding night, you paint your one ball  red and the other ball blue.   If she says, 'That's the strangest pair of balls I ever saw', you hit her head with the shovel.'