Funny Dirty Joke

Little Johnny got home from school and told his mum " I just had my first sexual experience!"
His mum replied "I'm going to speak to your dad about this when he gets home. Go to your room." So little Johnny goes to his room.
When his dad gets home his mum tells him about little Johnny's first sexual experience.
His dad says "I won't get too angry at him because at his age, I was looking for my first sexual experience to."
When he gets to little Johnny's room he asks him "So how was it?"
Little Johnny replies it was Great! The only downside is my ass hurts."