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1.
The over-usage of LOL in an e-mail or instant message conversation. Typically, more than 2 LOL's in 4 lines of text constitutes an overlolism.
USER1: lol, I just fell out of my chair.
USER2: lol, why?
USER1: I dunno lol
USER1: lol I was spinning around.
USER2: Whoa, overlolism!
by The Search Is Bound to Fail January 24, 2006