A small, jelly creature that is rubbed to produce fleeb juice, which is an essential ingredient in plumbuses, gropples, and many other household items.
The fleeb is then rubbed, so we can get the fleeb juice
by bluekid3 May 24, 2017
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a word that didn't quite make it as a synonym for tool or douche bag mainly for the fact that the people who say it are tools themselves.
by lawlwotevr January 4, 2009
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Someone being or acting in a way that is stupid or annoying.
Ugh that fleeb keeps looking at my phone
by micklickthisdick April 23, 2019
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In the Lego community, a space creature that chews through metal, etc. Resembles a scorpion with a shallow dome on it's back.
"Look out! A fleeb! Don't let it chew up the ship engi- *BOOM!*
...
Too late."
by Shadowviking August 25, 2007
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A person who goes out of their way to cause trouble, generally in the form of spam.

Fleeb usually travel in packs and are thought to be bottom-feeders.
Did you see that guy's posts on the RMB? He's such a fleeb.
by NotFleebian October 16, 2016
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Fleebing is an act of completely inhaling anything, although mainly food.
Guy 1: That pizza was delicious.
Guy 2: I know, I totally fleebed it!
by Dolus January 3, 2012
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35 mins until Big Brother comes on! *fleebs*
by Smasher513 July 23, 2009
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