A joke.
There was this little boy and this mother in the bathtub taking a bath. The little boy points to his pecker and says,"Whats that?". And the mother says,"That's your little tug boat". Then he points to her pussy and says,"Whats that?". She says,"That's my harbor". The little boy says," Can my little tug boat go in your harbor?". She says,"No. Only daddy's big battle ship can go in my harbor".