emotenuse
Derived from the mathematical term "hypotenuce," it is the longest side of the right-angle triangle formed by the standard emo haircut; the sloped line covering one or both eyes created by the backward, angular mullet favored by emo clones.
The length of an emo crybaby's emotenuce can be calculated with the formula A squared plus B squared equals C squared; C being the variable representing the length of the emotenuse.