Top Definition
A person who has several personalities. Tries to impress people when ever possible, not by telling lies but by dressing nice appeared being extremely smooth during casual hangouts and gatherings. This person also feels the need to work out on a regular basis and the more this person works out the better he feels.
Yo, tonight that girl really thought you were a rosstifer, she seems to dig you.

After the gym today I feel like such a rosstifer
by Rgerlack May 01, 2010

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