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A slang term for a promiscuous woman. Commonly used by drunk bikers; the term "Joubert" reached the height of it's popularity in 2010 via online escort services catered to low income clientele.
We should go hit the bars in Oshkosh tonight. I've got an extra $10 set aside in case I need to find a Joubert.
by Greg the Collins September 03, 2011
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To tell an outlandish lie with no factual basis whatsoever usually with the intention to destroying an opponent usually used in connection with an overbearing abusive semi deranged older female in a position of feigned authority.

It is believed that this word derives from the word jail bait. It applies though to an older woman not a young girl. The root of the issue is the same though -- a female who is dangerous through deception, deceit, and manipulation.

Another theory is that this word derives from an old Amazon word Juuber which meant a very tall, masculine, evil, dangerous woman who kills and eats men and also children. In the deepest jungles, when a man is really upset because at an older woman, he will shout "Juuber." This is considered an obscenity in the Amazon Jungle.
That old Joubert hag lied stating that I had sex with a goat; gee whiz, I live in New York City and have never seen a goat.

Lanette, stop acting like a Joubert.
by Dudman October 21, 2011
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