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1. Exclamation of manliness; esp. after a particularly manly act
2. An exclamation used to establish one's status as the alpha male, and to put down any possible challengers.
3. To physically strike a bear in the mandibular region.

The word is highly versatile and adaptable to new situations. No matter, it gets the point across.
1. (After fighting off 10 ninjas) "PUNCHABEARINNAMOUF!"
2. Joe: Do you wanna fight?
Matt: Bitch, I Punchabearinnamouf!
Joe: Oh damn I was uh... just kidding!
And then Joe Runs away.
**Note: in some situations, one might place extra emphasis on the "bear" part of the word, just for extra authority.
3. Dave: We were camping and this bear tried to steal the fish that we just caught!
Phil: What did you do?
Dave: I Punchabearinnamouf!
by MTBrenzo December 03, 2008
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Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
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