A little boy plays in a sandbox with the little girl from next door.

He brags, "I have a big fire engine."

The girl responds, "So what? I have a fire engine too."

He says, "I have a toy tank."

She replies, "So what? I have a tank, too."

The young boy drops his pants and says, "I have a penis!"

The little girl looks down her pants and runs home crying.

The next day, the little girl returns to the sandbox. The little boy says, "You still don't have a penis and I do!"

"Well," says the little girl, "my mom told me not to worry about it. She said as long as I have what I have, I can get as many of those as I want."