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someone hopped up on amphetamines
"What's wrong with that guy? His eyes ar popping out of his skull and he's shaking!"

"He's a speed freak!"
by Nasty Nate August 22, 2003
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(SPEED freak) n. a drug addict who is always high on crystal or methamphetamine syn: tweaker, meth head, sketcher
Dude: Yo, wtf is up with Sue? Is she always spun?
Other Dude: Fuck yeah man, she's a speed freak.
by Nedd Ludd August 23, 2005
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An individual who drives any vehicle at excessive speeds.
Little Ricky Racer loves to drive his ricer in the triple-digit domain... he's the epitome of the fast & furious speed freak!
by Gapingredgroovie January 07, 2009
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