Facebook "friends" who never post anything, never like anything, and never comment on anything. They just keep accumulating friends to spy on!

And sometimes in person they'll mention a photo you posted that they liked, so you KNOW they're looking!
That guy is a total foyeur... he's only on Facebook to keep an eye on his old girlfriends and spy on his coworkers.
by azbeetlebabe May 12, 2010
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sexual fetish in which one spies on people through those distorted-perspective peepholes build into the front door of a house or apartment.
Mark's foyeurism is really annoying; last night I caught him watching the girl across the hall take in her groceries.
by the moody booze July 11, 2008
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