to be cool...or awesome...a substitute for cool or awesome
johhnys party was soo vack!

That is the Vackest thing ive ever seen
by scotty parker June 30, 2006
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A hurtful and sometimes meaningful word that basically tells someone to fuck themselves
" shut up you vack-ass motherfucker"
by iexplain10000 November 7, 2022
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Going to someone’s instagram and liking a bunch of old posts at once. Inspired by instagram’s very own themasterofcum
He Vack attacked my instagram all the way from 2018 so I think he likes me.
by Kawaiichancellectual October 28, 2023
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