Sally's Mommy is smart (marginally NSFW)

Little Sally and Little Johnny are playing in the sandbox one day.

Johnny looks at Sally and for whatever reason decides he wants to play a game with Sally.

So he gets her attention and suddenly pulls up his shirt. And then, pointing to each nipple, he announces "I have one of THESE and I have one of THESE"...and looks at Sally with a typical kid neener-neener grin.

Sally thinks for a second, and pulls up her own shirt, looks down, and happily announces back to Johnny "Well, I have one of THESE and I have one of THESE, too!!" and she smirks with that typical kid "I showed you" face.

So Johnny, having been equaled, decides to up the ante, and whips down his drawers, points to his wiener, and exclaims "Well I have one of THESE!!".

Sally, now understanding how the game is played, pulls down her pants, looks down, and is horrified to see that she does not have what Johnny has. Johnny, seeing that he has 'won', begins to laugh and taunt Sally no end. Sally is devastated that she is being picked on by Johnny and she runs home, crying.

The next day, Sally and Johnny are again playing in the sandbox and Johnny decides it's time to once again see if he can get Sally riled up, so he starts the game again by whipping up his shirt.

"I have one of THESE and I have one of THESE!!"

Sally follows suit, pulls up her shirt and responds "Yup, I have one of THESE and I have one of THESE, too".

Johnny, sensing victory is near, excitedly whips down his pants and shouts "Well I have one of THESE..and YOU DON"T!!" And Johnny laughs and laughs. He starts similar taunting to the day before.

Sally waits for Johnny, but does not cry or run away this time. When Johnny calms down a bit, only then does Sally pull down her pants and says:

"Well, Johnny, I have one of THESE...and my mommy says that with one of THESE, I can get as many of THOSE as I want".