Top definition
A person who steals someone elses thunder/swagger.
Person 1- "Its my birthday!"

Person 2- "I'm pregnant!"

Person 1- "Bitch, you're a swaggernapper!"
by Speedfreak21 November 30, 2009
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May 3 Word of the Day
Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)
Monica: Oh yay! I made a new mutual today because we started following & talking to eachother on twitter and we like eachother (so it seems).
by qtheresurrection March 25, 2015
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