Top definition
1: a male cameltoe
2: a male package visible through his pants
"Why does he have to wear spandex? You can see his man grenade from here."
by Tim W February 09, 2006
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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
When you see a hott ass girl mackin it with/dating a dude and you have no idea how that dude is mackin it with/dating that girl cause hes ugly and looks like he should be dating a tree stump instead.
-Yo that girl Michelle is mad fine, I wanna get with her.
-I know man but I saw her boyfriend and hes a total man grenade.
by Jimmy Nickson September 30, 2010
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3
The cock blockin Fat chick you have to jump on so your buddy can get the hottie.
"This fat bitch has been cock blockin me all night I need you to jump on the man grenade"

by alphamale70 February 24, 2008
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4
When a male commenter posts in response to a woman with several walls of text that mansplain a subject. The hallmark of this conduct is a loose or factually deficient understanding of the original comment or post and an insistence on seemingly technical or highly rhetorical argument. Motivation is unimportant though typical stated motivations are “education,” “fairness,” or “playing devil’s advocate.”
The conversation was reasonable until Nyeng started throwing mangrenades and disrupted everything.
by Alanbly October 20, 2020
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5
A loose cannon, liable to go off at any time causing severe damage to those around him. Often found armed with a brown paper bag of exceptionally strong skuzz.
Christ alive, check out Mangrenade... That shit can't be legal!
by sweet September 08, 2003
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