Double handed hair-pulling
Commenting on the size of opponent's boyfriend's penis
Citing your sources

Not using MLA format :(


-Eleventy Billion
Any variety of hand-flapping
Boob punching
Creative use of liquids
Temporary blindness
Permanent blindness
Semi-permanent blindness
Requesting backup
Requesting backup DANCERS
Use of the word "biatch"
Use of the word "queef-demon"
Use of the word "supercilious"

And if you enjoy girls fighting each other (who am I kidding, of course you do), check the Catfight Tag.