1 definition by hahahajackmyswag
The opposite of grool (as used in the beloved film Mean Girls). To be lumb is to be lame and dumb all at once. Can be used as an adjective, noun, or verb.
Jack: Nicolas Cage used to be grool, but everything went downhill after National Treasure 2.
Ash: Yeah, now he's just a lumb actor.
Jack: Don't be a lumbdog millionaire.
Ash: Yeah, don't be lumb and lumber.
Annabelle: This little lumb of mine, I'm gonna let it shine!
Ash: Yeah, now he's just a lumb actor.
Jack: Don't be a lumbdog millionaire.
Ash: Yeah, don't be lumb and lumber.
Annabelle: This little lumb of mine, I'm gonna let it shine!
by hahahajackmyswag February 24, 2015