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1.
the most grose, vile, discusting thing known to man
Did you see them two discusting moga's at dinner?
Tom Webb and Ian Prior
by Walshwee. November 20, 2009
 
2.
MO•GA | mo gǝ |

verb

To engage in consensual gaming activities with the best damn mobile gaming system anywhere.
“Dude, Nicole and I MOGAed all over the place on Saturday; the park, the laundry room, on the bus, even at a coffee shop. Shit was crazy.”
by GameGrl December 04, 2013
 
3.
It is a synonym to crap or shit. (Adj.)
Got that math test was complete moga...
by Mittens121 June 26, 2010