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The act of fapping to pictures of people on FaceBook. This is a form of FaceBook stalking in which the act of masturbation takes place.
Roger: Hey Eric, I give you permission to stalk and fap to anyone on my friend's list as you see fitting.

Eric: No I'm good, I'm above FB fapping

Later Roger walks into Eric's room not noticing the strange fapping sounds and sees Eric going to town to one of his FaceBook friend's profile pics.
by Schlong Daddy June 10, 2013
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Scrolling through Facebook profile pictures while fapping
You have been in the bathroom for an extended period of time, quit fb fapping and come out.
via giphy
by MarthNi June 12, 2018
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