1. A person, place or thing, that resembles either a "Kurt Cobain looking motherfucker" or a "Leonardo DiCaprio looking motherfucker."
2. A person who spends copious amounts of time sleeping on your couch (see couch monkey as well).
-adj. Nickknapped nic-napped
3. To be hired, fired, rehired and refired from a job for the same reason.
Alex: Just some nicknapp who passed out here at the party last night.
Susan: Where is Joe today?
Greg: Oh, you didn't hear, he got nickknapped.
Susan: He missed a mandatory staff meeting again?