The original definition of "twank" is a term created by old school skater kids to describe a twisted or busted up ankle. Often used along side the word "dank", which is similar to twank but describing the upper body parts.

-Today I went skating, I twanked my ankle up real bad, and danked my right wrist when I ate shit.
by cooliosis April 16, 2007
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Can be used for the word two, twenty or twelve, but more often when describing a twelve pack of beer, or a 20 dollar bill. You can modify the word twank to encompass a 24 pack by making it twank fo'. You can double up the word for added effect.
for a twelve:

Joe: Hey man, how much beer are we getting?
Bruce: Dude, we're pounding a twank tonite!

or for a twenty four pack:

Joe: Yo dogg, how many natty's you got in the suitcase?
Dan the man: I'm haulin twank fo' frosties beeyaatch.

or related to cars:

Man! that niggaz tuckin' twanky twanks on his six fo'
by staff September 15, 2005
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better than dank, awesome, cool.
ultimate amazing and sick
concocted from TWEAK and DANK.

most common usage is to discuss how great your uppers/stimulants are..they are twank as fuck
man this meth is fucking so crystal clear...this shit is twank as fuck.
by Andrew Twank November 28, 2007
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To tweak something until it is beyond repair; whatever you were tweaking is now tanked, and you need to start over.
I tried to change the two-column newsletter to one column. Now the whole thing is twanked.
by Snarls Barkley January 10, 2012
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to fondle another's private area while dawning holiday bells
by Silly Bitch April 13, 2008
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"Hey Twank, get them offa my portch, and stop drinkin my Lauders."
by Jimmy Twangler May 14, 2004
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