Top Definition
Originial term to describe a man's "virtual penis" in chat rooms on the internet. After finding that the term sounded a little gay, e-peen was adopted.
Jason: thanx newb
Jason: fng
Jeremy: What is fng anyways
Jason: fucking narcissistic generalist
Jeremy:'re quite a tough guy online jason =). Your swap cock must be humongous!
by nayrsivart August 25, 2008
5 Words related to swap cock

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