Twacked is the term that describes coming down from amphetamines after the more pleasurable effects have worn off. After that amazing feeling, the one where every word that comes out of your mouth feels like it's made of silver, the feeling where your every thought and emotion become the most important thing in the world, or when you feel like all of your buddies are clinging to your every syllable like it's their life support (and you do the same to theirs).

It's that amazing feeling but the complete opposite.

Every word is forced, every thought muddy and brown, your friends no longer seem to have any concern for you, your tired but you cannot sleep, your hungry but eating brings only the feeling that your swallowing a whole apple, this is being twacked. When your twacked you become nothing more than a zombie. You have no soul or feelings. In this state your emotions are brown and muddy, usually non-existant.
Although I've never tried meth or speed. I have been twacked after nights of more adderall than I can count. Being twaked is an amphetamines equivalent of a hangover. It's the reason I've never bought adderall and have only done it on occasions where it was free. It's the reason I'll never try meth. It's the reason my preferred amph is XTC. It provides the greatest sensation of ecstasy (hence the name) with the most tolerable come down.
by ~~Smoke weed every day~~ December 3, 2007
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i did 4 geygers and i'm twizzacked
by Jethro May 21, 2003
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Yeah she's been doing hella twack lately
by Kat November 3, 2004
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Gacked out, spun out, tripping out, tweaked out, highly medicated displaying nervous posture and tremor and or motor muscle twitching, paranoid behavior, insomnia, decreased appetite.
by Amping November 7, 2017
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The act of masterbation while high on methamphetamine enduring up to 12 hours with the use of pornography. Derived from the words whack meaning masterbation and tweak a synonym for methamphetamine.
He ain't answering his phone because he's been twacking all night long.
by Gametophyte April 12, 2020
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My dealer was out of marijuana so I scored some twack instead.
by Richard Thrust September 27, 2019
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