The act of pushing past sports related adversity to the point of vomiting.
Did you just see Sean Yack and Rally at conditioning last week? He just threw up on the court and kept playing!"
by BakHa aaaaaasdfaaaa May 29, 2018
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Having a substantial amount of a particular item(s). Currency, property, possession, etc.
When playing Escape from Tarkov, if you encounter a player with a substantially large back-pack or expensive gear, you may say;

“Wow, this guy is yacked out of his mind.”

“Jesus Christ I just dropped a YACKED player.”

“I think I’m going to go in raid yacked tf out.”
by Straizo August 29, 2020
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When you jack off with a fur glove that feels like an animal (Ex. Yack fur)
My friend was hunting when he made a glove and started “Yacking off”
by Sexy Squidward July 13, 2020
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To talk incessantly! Blow one’s phone up.
Look at that poor guy over at the bar, that girl is yacking the alphabet off. Yeh he can’t get a word in.

I am so sorry I was yacking the alphabet off yesterday. I will refrain from blowing your phone up
by Yetilove August 24, 2021
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messy hookups in a gross place, an example being a public bathroom
"all the holy child girls yack in the shack with gonzaga guys during football games"
by tea lover ;)) January 25, 2017
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