Short for Motivational Poster. Although, strictly speaking, if it is called a MoPo, it probably isn't very motivational. Just in the same style as a Motivational Poster.
by Andelicious August 30, 2008
MoPo is short for the "morning poop".
I'm like clock work! I wake up. Wash up. Sit in front of my computer and then I have to go and take my MoPo.
by SupaMD June 26, 2007
by soleilswag December 12, 2009
Guy 1: What just fell out of your nose onto my keyboard?
Guy 2: I don't know
Guy 1: Ewwwww it was a MOPOS
Guy 2: I don't know
Guy 1: Ewwwww it was a MOPOS
by Celebrity's Cousin April 21, 2011
by Rich January 28, 2005
by Speedy25 October 15, 2008