Funny Dirty Joke

one day a little boy and a little girl were taking a bath because they didn't know what anything meant yet. The little girl looked down and saw the boys penis and asked "what's that?". The boy said "i don't know i will ask my daddy.". And then the boy looked down and saw her vagina and asked "what's that?". The girl said "i don't know, i will ask my mommy.". So they both go home and ask there parents.
The boy said "daddy what's this?". His dad said "son that's your car, you try and put it in a girls garage.". The boy said oh and ran upstairs to play.
The girl said "mommy what's this?'. The mom said "honey that's your garage, you don't let boys park there cars in there.". The girl said "oh." and ran upstairs to play.
The next day the little boy and girl were takink another bath and told eachother what there parents said. The boy remembering what his dad said tried to put his 'car' in her 'garage'.
A couple minutes later the girl ran home crying with blood all over her. The mom said "honey what happened?!?!?". The girl said "a boy tried to put his car in my garage so i slit his back tires!!!".