A Porn Nam is to porn as Nam is to veterans of the war of the same name. It's a horrific event that ruins not only your boner at the time, but quite possibly your porn viewing indefinetly.
Josh had a porn nam when he saw his Dad's porn folder full of trannies.
My porn Nam was seeing a MMF threesome where the guys were as interested in each other as they were the chick.
A word used by the angst filled, emo kids and retards living in cities starting with an "S." (See: Seattle, Sanata Barbara, San Diego)
Dude, that crying session to Dashboard Confessional was Hela Emo.