Little Johnny walks past his parents bedroom on his way to bed. The door is open and he sees his parents shagging. His dad laughs and throws a pillow at him and tells him to go away. Johnny walks off goes to bed. The following night Johnny's parents hear a commotion in his room and run to see what is going on. Horrified they see Johnny bending his grandma over giving her one. Johnny looks at his dad and says "Not so funny when it's your mum is it fucker?"