To refer to oral stimulation of the male genetalia used in cases when someone is just acting foolish.
Dude: I'm about to catch that crucial muggin earmuffs tonight man
Dude 2:Huh?!
Dude: You know man, that bop son.
by Pville69 November 3, 2007
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When my boy Donnie goes to a club in D.C. with no cab money to get home, then has a female that is overweight come pick him up, and drive him home!
Dude, it is 2:45 AM and I am drunk off my ass, it is time for the Crucial Late Night Fat Girl Pick up!
by Gin February 27, 2004
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Damn bro. Probation was crucial today I almost got tested and I woulda failed
by Joriginal October 22, 2018
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First, to all the haters of this word, shut the fuck up bruh you're on URBAN DICTIONARY. Quit acting holier-than-thou like you give a fuck about the bastardization of the language, it's slang – deal with it.
#Facts

The term "crucial" is used in situations that pop up that are more serious than others, kind of in a way nodding to the actual definition of the word (necessary) with a slight difference. Usually used after the word "that's" to signify importance to the subject. Sometimes it fits very well into context despite the unorthodox usage.
"That 3 pointer by Kyrie in the finals was so crucial"

" You got an iPhone 7 but didn't bring the thing for the aux? Damnnn that's crucial"
by Mich St SUCX November 12, 2016
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Term often used between multiple partners to alert the individual of an attack from the rear usually pertaining to a zombie outbreak.
Todd: "I'm doin' so awesome, nothin' can stop us now!!"
Jack: "TODD!! Check your crucial 6!!"

Todd: " Thanks man, that zombie almost mounted me from behind!!"
by Gnomerer December 21, 2010
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Something that looks like fun or beneficial at first but interferes with other more important matters in the future.
Having sex with your friends girlfriend is definitely a crucial conflict.

Having sex with someone who has an STD , is also a crucial conflict
by Black wisdom November 13, 2017
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