Four Girls

Four girls were playing a game of tag. All of them had really long names that were hard to say, so one person thought of the idea of giving themselves nicknames.
One suggested thinking of funny names, so the really tall girl was named 'Shorty'.
The really thin girl was named 'fatty'.
The next girl was very 'girlish', so they named her 'tomboy'.
The last girl was the hardest to pick a name for, because she was not tall or short, fat or thin, a girly girl or a tomboy.
Finally it came to them. Now there is Shorty, Fatty, Tomboy, and Smarty.