where the thighs go straight to the back, no ass at all
She was fine from the front, but when she walked by, I noticed that she had thack.
by Renae B June 2, 2006
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to be tweakin out on amphetimines or any other upper
that ice got the whole town thacked out
by yo you November 1, 2006
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v. to curl the middle finger under the thumb and release the finger with great force onto an unsuspecting target. Works well on victim's head or ear
"I thacked that foolio"
by D-money November 2, 2004
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1. A cross between thick and fat. 2. Something really cool.
1. His mohawk was really thack.

2. Man payday is really thack.
by Digidy Dawg November 4, 2011
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When a dwarf like homosexual sucks you off with out you noticing, he can also make your bell end bleed. They usually attempt to T-Bag you until the scrotum splits!
by Crazy Dave November 17, 2004
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When you want to fuck all of your friends but don’t want to say fuck, use thack, thacking, thacked.

The girlfriends will never know
Yo bro you get thacked by Pete yesterday?

Can’t wait to thack u later bro

Oliver is the best Thacker I’ve ever seen

Thacking is so fun, can’t wait for thacker to thack me later
by barkincarp12 March 24, 2023
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Where a girl has a horrbile thick knotted pubes..
“I woke up feeling a clear case of thack attack as I rub my tongue along my teeth”
by JahJahRastafari June 18, 2009
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