Little Timmy and his father are walking in the park. Timmy sees two dogs humping, and says, ""Dad, what are they doing?"" His father looks and says, ""Oh, they're making a puppy."" Later that night, Timmy walks into his parents' room and sees mom and dad going at it, and says ""Dad, what are you doing??"" His Dad says, ""Oh, we're making you a baby brother."" Timmy says, ""Well flip her over, I'd rather have a puppy""