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A person who behaves like a jackass, makes things harder for themselves, and makes all arround bad choices in life. When someone has the brain of a small primate, not even a big one.
Nice apebrain u fking tard!! U did that all wrong.
by Mr ape123 December 09, 2009
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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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2
Somebody who is not very smart; a person that has the cognitive abilities of an ape.
John: hey what’s 9+10
Sam: 21
John: you are such an ape brain, it’s obviously 19 you simpleton
by LeEgg October 02, 2020
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3
A human who is so idiotic their brain could be compared to that of an ape's.
John: My boss says he wants me to come to work with no face mask, even though there's an AIDS+ebola+covid+black plague outbreak.

Jack: Your boss sure sounds like an ape brain to me.
by RedBonnet May 10, 2020
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