Top Definition
When someone is seriously IMing more than one person on a regular basis.
missangel2you: You should know that I'm polyIMorous. I've been IMing regularly with two other guys... You aren't jealous, are you?

chainmailmike: No... Well, I don't know. I've never IM'ed with someone who's polyIMorous.

missangel2you: You should know that I really value our IMing. It's a really special time for me...
by colleencalling September 06, 2009
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