Truth be told I stole dat shizzzzz from the interwebs.
The girl is Cristal...something something AKA "Serious" and she was a contestant on the first season of Flavor of Love and on Flavor of Love Girls: Charm School. The imagery in the sig is from FoL, though. I think she was getting amused by a bunch of girls fighting and she started imitating them like WHAT?! WHAT?! WHAT?! I DON'T GIVE A FUCK! WHAT!?