Extreme Differentiator 

A person who goes to great lengths to stand out and gain attention.

When a person, who has difficulty receiving positive attention due to their dull personality or unattractive appearance, does something stupid or ridiculous in order to gain attention.

When an unattractive girl dyes her hair bright pink.
When a fat guy walks around making cat noises.

"That guy acts/looks like an idiot, he's such an extreme differentiator."

Extreme Differentiator by Dictionary Connoisseur December 18, 2012