To look at every picture in the FACEBOOK profile of someone you have a crush on.
"Dude,I spent like two hours facestalking Lisa last night."
by Deemolay January 6, 2010
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To browse Facebook users' profiles constantly without their knowing, especially when they are not your friends and you are judging them as you do it.
Katie: "Hey you wouldn't believe who added me on Facebook, Fre-."
Michelle: "Fred Thomas, I know, and he commented your pictures."
Katie: "Hey, how did you know?"
Michelle: "Oh, I was just FaceStalking last night."
by Matie Chulick July 4, 2009
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When one means to look at another's profile, but winds up spending hours going through the other person's like, pictures, friends, and statuses without realizing it
Greg: So the girl from the party last night friended me.
Ken: Awesome, so did you facestalk her?
Greg: Yeah, but totally by accident. Her pictures were all just so sexy that I couldn't stop.
by rairai97 February 11, 2011
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A pastime involving the relentless stalking of individuals over the friend network site Facebook, This Usually involves repeated periods of masturbations over the victim’s photographs.
'I'm a Facestalker, I'll find you and cum over your pictures'
by The wiseman 22 June 21, 2009
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To stalk someone on facebook, by either commenting on one's status constantly, posting on one's wall, or commenting on photos the person is in.

Alternatively, one can 'like' every status of the stalkee
I hate that bitch, so I annoyed her by facestalking her for a week.

by beanstalkninja March 16, 2009
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n. The act of stalking someone on facebook. Though has been known to backfire thanks to apps like top stalker, it has been useful for lazy stalkers to keep up on their favorite targets.
Dude, this chick in my photography class has no idea I'm facestalking her.
by Number13 September 20, 2010
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A person of whom preys on the weak and addicted in the facebook world. These "facestalkers" spend every spare minute looking at everyones status update, new photos and potential friends or 'hotties'..
Such people are in need of serious help as once they begin the stalking, ending is near impossible!.
"hey you should totally check out.... he is so hot.. i'v been facestalking him"
"omg- your such a facestalker"
by facenessnessness February 5, 2010
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