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Twix is a slang quantitative word meaning £200. Coming from the fact that biscuit is monetry slang for £100, twix can be used to double up this value.
Tricky: Why is Mitch called Twix?
James: It's 'cos he said he'd suck off a man for £200.
Tricky: Oh right, like a biscuit, only theres two of them...
James: Bingo.
by MitchTheBastard March 02, 2009
to bail out on...to flake...to leave someone hanging
man forget that bitch she twix on me everytime i try to take her out........

we were gonna double date but the guy started acted weird so we twixed on him.
by kamkilya May 15, 2009
A twenty dollar bill. (A slang word used often in St. John's, Newfoundland)
Person #1 : How much did you pay for that shirt?
Person #2 : About a twix.
by A. J May 26, 2008
What a hooker with a lisp turns.
Hey baby, how's twix?
by aereilly August 03, 2003
A slang term for Penis
Hey damian dude how big is youre twix?! or
by George and the twins May 06, 2008
Twix; adj: originates from the latin "twixfactus" referring to a person/s who is no longer in control of excretary processes due to unforsen external influences or pressure. (pant shitter)
"oh my god i think he's twixed it.....quick call the twix man...tell him to bring extra sawdust and shovals."
by Pedal A.ttack November 10, 2005
Two fat joints (or marijuana cigarettes for those who somehow don't know what a joint is.)
We can smoke these twix.
by Illinois Joe August 16, 2004