Little Johnny's parents got divorced. One night Little Johnny walked past his mother's bedroom, the door was open, and he sees his mother lying on her back playing with herself, saying "I need a man... I need a man..."
A few nights later he walks past her bedroom again, the door's open, and he sees his mother with a man on top of her.
Little Johnny runs to his room, jumps on his bed, pulls down his pants and starts playing with himself, saying, "I need a bike... I need a bike... "
Little Johnny walks in on his parents having sex and asks, "What are you doing?" His father says, "We're playing cards, and your mother is my wild card."
A week later, Little Johnny walks in on his father masturbating. He asks, "What are you doing?" His father says, "I'm playing cards." "Where's your wild card?" Johnny asks.
His father replies, "Son, you don't need one when you've got a good hand."