Top Definition
a Buddy that is being a Jerk Face; a group of pals that question your Rad; A phrase used to address your friends that are currently being Lame; Someone that knows about Rad Harmony but chooses to be Lame and Hate on a Fellow Def-Radder;
"You Mother Effin Semi-Sorta Groover, you need to get away from me! You are ruining my Gnarly Rad Harmony!"

"Let the Mother Effing Semi-Sorta Groover's Hate, I am gonna kick back and Celebrate!"
by Don_Mayhem January 26, 2010

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