Top Definition
There some people in the world that cannot go a few min. without sending a pic message. If they can't they may have mmsitis.. There is another disease like it called smsitis which is very contagious. It started spreading in Tempe, AZ recently.
Dude... You send me 10 pics a day. I think you have mmsitis!!
by DjSesso February 18, 2010

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