Nobody really knows for sure. Some faggy skater I knew used it all the time in a way similar to "dawg" or "homie." It's gay skater slang I imagine.
Sup hermdogs? I don't know hermdog!
by Guy November 22, 2004
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Abbreviation of hermaphrodite with the added association of being a close acquaintance. see entry for dawg

Hermaphrodite + Dawg = Hermdog / Hermdawg
Adjusting his/her package while entering the crowded bar, s/he spotted his/her other hermaphrodite friends and called, "Sup, hermdogs?"
by theMDX March 17, 2008
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