sinhasist 

an individual suffering from an accelerated state of narcisism, tending toward egomania. the condition is often mistaken for "small man" syndrome. the sinhasist is never wrong, he simply misheard the question.

"stop being such a raging sinhasist"

"im sorry God, i'm afraid I must point out you are mistaken" sneered the sinhasist.

sinhasist by mr_plodd October 25, 2007

Sinisister 

A rotten older sister.

Person 1: My older sister made fun of me today
Person 2: Well what do you expect she's a sinisister

Sinisister by youngersibling1111 May 4, 2010