mo forious 

A notorious mo fo or a notorious mother fucker!

shut the fuck up mo forious, or I'll bust a cap in your ass!

mo forious by Big Bunny May 13, 2005

mofocious 

adjective: exibiting the behavior or qualities of a motherfucker

Tailgaters are the most mofocious people around!

mofocious by shankus November 30, 2004

Mofonious 

A heinous act, having been perpetrated by a "mofo" Or, something unfortunate that occurs.

"Man, that bag of flaming dog doo on your doorstep is MOFONIOUS"

Mofonious by Nickel Pickle June 3, 2003