2 definitions by Jaylikesguitar

Top Definition
1. Good, but not good enough for one to raise whole thumb - thumbs up - a halfhearted sign of good job.

2. Most Likely used when while playing a sport and that one kid thinks hes really good, and everyone tells him hes really good but behind his back your laughing becuase he just fell flat on his face trying to catch a Frisbee. And he still missed.

Example; Wow. You were so drunk you fucked your own sister. Nubs up dude.
by Jaylikesguitar January 15, 2009
An acronym mean Face Book Material. When one believes that a picture taken is ether worthy of being your default picture or the cover picture of a Photo Album.
Wow Jim that picture I took of you last night passed out on Nicks crotch is hilarious; its FBM to say the least.
by Jaylikesguitar October 05, 2008

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