This 12 year old boy was in bed when he heard his mother moaning.
He decided that he'd go see whats wrong with her.
When he looked in his mothers room he saw that she was laying on her bed naked and rubbing herself and saying"I need a man, I need a man!"
So this quite a few times and then one night he heard his mother again, but this time her moaning sounded different, so he went to go check it out, this time instead of seeing his mother alone, he sees his mother in bed with a man.
So the boy runs back to his room, strips all his clothes off, jumps on the bed and starts rubbing himself while saying "I need a bike, I need a bike!"