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1.
One who has never been banned on a message board. Its origin is the convergence of the term s/n (sign in name) and virgin.
The moderators never bother me. I'm still a snirgin.
by Lostie September 04, 2006
 
2.
A term for when you have not ever french-kissed someone, evolving from virgin, but the 'sn' meaning 'snog' which is english slang for 'snog' also meaning french kiss.
"Have you ever kissed anyone?"
"No."
"Ha, you're a snirgin!"
by Leanne Ward February 16, 2009