Paddy is planning to marry, he is, and asks his family doctor how he could tell if his bride-to-be is still a virgin.
His doctor says, “Aye, Paddy, all Irish use three things for what we call a Do-It-Yourself Virginity Test Kit…. a small can of red paint, a small can of blue paint and a shovel.”
Paddy asks, “Aye, and what do I do with these things, doctor?”
The doctor replies, “Before ye climb into bed on your wedding night, you paint one of your balls red and the other ball blue . If she says, That’s the strangest pair of balls I ever did see…”, you hit her with the shovel.’