"look at the girl with the breathtakingly attractive body so much so that it's almost dangerous..her name must be teff..."
by teff September 29, 2006
A shortened word that refers to teflon coated (and often steel core) ammunition which, at close range will penetrate vests, engine blocks, kevlar helmets, etc. Teflon, a fluorocarbon, is the acclaimed "slipperiest substance" in the world, which makes it an effective cop killer.
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