Top Definition
The act of seeking out and masturbating over images of an individual you have briefly or never met.

These images are usually located via a social networking site, such as Facebook.

The word is a portmanteau of stalking and fap.

This act is primarily indulged in by males.
John couldn't get Amy out of his head, so he found her on Facebook and had an epic stalkfap over her recent pictures from her visit to the beach.
by thomyorke2 February 24, 2010
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