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TWACK v. To strike with great force using the back of the middle finger (usually the nail) after coiling it under pressure against the opposing thumb. Accomplished twackers can inflict great welts upon their victim's flesh.
That turd cutter pissed me off, so I twacked him right in the munt!

On the first twack
Pope jumped like a macaque;
On the second twack
Pope was taken aback;
On the third twack
Lost his marbles the old hack.
(A. S. Pushkin)
twack by Clittary Hilton November 19, 2007
Related Words
Girthy or rather thick male penis(cock)
Omg Kimmmy look at his thock, I don’t think I can take that.

Wow that’s a nice thock !

Do you have a thock ?
Thock by Mike e February 11, 2021
The term 'TWOC' is an acronym for 'Taken Without Owners Consent’ (Taken can be replaced also with 'take') apparently originally used on police documentation, the term has become a popular part of conversation amongst the younger community. The word can be used as simply 'TWOC' or 'TWOC'ed', depending on the situation. The people most likely to be found using this word are young anti-social vandals.
"See that van there?...i'm gonna TWOC it"

"y'know what bill, fuck off. I TWOC'ed your car yeah, but jesus, i haven't heard the FUCKING last of it!"
twoc by Richard Belk July 19, 2006
Someone who is in the gray area between a crackhead and retard.
You're a fucking twack.
Stop twackin out
Twack by TheCreatorUBitch January 26, 2019

Twackerjack 

A sleep deprivated person that is spun out on meth.
Twackerjacks are easily detected by their severe body and facial contortions (see: Monkeyface).
Damn girl! You are completely twackerjacked. Go to bed.
Twackerjack by lledrovc July 25, 2007
We just found out a twoc friend is getting evicted by her parents.
twoc by Rhona Taniguchi July 28, 2019