When a person (usually a wrestler) is obscurely lean and muscular
Brian: "Who do you wrestle next"
John: (Nervously points to his next opponent"
Brian: "Dude that foo is YACKED"
by dchipres February 13, 2020
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To be ridiculously wet shooting the basketball; used in same context as "swish" or "splash." Can also be used in other context, such as a long killstreak in Modern Warfare 2, and combined with other words to form fantastic contractions.
Here's Bryant, for three...YACK.

I was yackin' on some bitches in M-Dub Deuces last night.

Combinations: yackadaisical, yack in the box, Yackensack, yackity-yack don't talk back, yack my bitch up, etc.
by flea61 April 20, 2010
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you see that pussy ass freshman over there just yacked after ripping my fucking juul
by traphuncho February 14, 2019
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What do you think Dave is doing at home? Eh, he’s probably Yacking it.
by Kordon Geith July 29, 2020
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Very well-muscled as a result of weight training.
I was flirting with her, but she had her boyfriend with her--and this guy was yacked.
by Anonymous June 2, 2003
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The act of a man ejaculating during an orgasm.

Can be used as yacking, or yacked.
Person 1: Hey Johan, how was your date with that chick you've been talking too?

Person 2: Frank, it was deadly. She gave me a wicked blow job and I "yacked" right in her face. It was a really special night.
by frankiejames July 5, 2013
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To puck or vomit a bad dinner or drink.
I think I'm going to yack up those bad clams we just ate.
by k2aileron December 6, 2006
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