A little boy and a little girl were taking a bath.
The little girl looked down and said,
"What's that?"
"That's my little red sports car," said the little boy.
The little boy looked down and said,
"What's that?"
"That's my little red sports car garage," said the little girl.

A few seconds later the little girl said,
"How about you put your little red sports car in my little red sports car garage?"
"Sure," said the little boy.

The little boy's mother was down stairs and heard this blood curdling scream. She ran upstairs.
Once she got there she saw blood all over the bathtub.
"What happened?!" she said.
"Well, Johnny tried to put his little red sports car in my little red sports car garage...but it didn't fit....so I cut the back wheels off....."