an undercover cop/drug deala.

usually is easy to tell if somebody is fettucini because they have something either wikid sick or out of place.
(x): dood check out dem spinnin rims!
(y): dat shit has GOT ta be fettucini, dawg
by d to da g December 22, 2004
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Yo, that nigga in da Crown Royale gotz to be fettucini, only five-O drive dem thangs.
by Dirty September 18, 2003
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A fettuccini beanie is when you grab a chick with stringy flat blond hair and cum in said woman's hair and then swoop it around her head making a fettuccini beanie
fettucini beanie
by Bedroombusternut February 2, 2016
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