A Grimmo is an adjective, used to describe a person/s. Usually it is used to refer to someone who performs the act of 'grimacing' more often than not. A true Grimmo is a person who negatively affects his/her surroundings- or grims them out. It has recently been adapted to be used as part of other words, such as: Grimbosauras Rex, The Grimminator, and Grimbo Baggins.
"That guy is such a Grimmo!"
"Will, you grimmed out the ash tray! Your such a Grimmo!"
"You see that guy over there, he is definitely a Grimmo, he just looks so grim!"
"Will, you grimmed out the ash tray! Your such a Grimmo!"
"You see that guy over there, he is definitely a Grimmo, he just looks so grim!"
by The Military Genius February 06, 2012
Get the Grimmomug. An extremely thin and sickly young woman who refuses to cook or clean for her seven bastard children and is typically seen holding a Virginia Slim in one hand and a flat-headed baby in the other.
by jackwwalsh January 22, 2015
Get the Skinny Grimmomug.