Okay so a travelling salesman and his son are travelling but the car breaks down. A farmer picks them up and let's them stay at his house for the night. 3 months pass and the farmer contacts the salesman. He sues them because the son got his wife pregnant.
Court time arrives, and the case is almost over. The son is in the stand and the lawyer asks the kid to pull his pants down. He starts shaking the kid's
Spoiler Below dick
and he says to the judge. "Now your honour do you really think this 13 year old kid..."
And the son interrupts him to say "Hey two more shakes and you'll blow this case wide open"