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1.
a mass of fecal matter. Poo, usually fairly large in girth.
Dude, i got to drop a masa before we head on out; who knows when we will find the next bathroom.
by sotnas August 09, 2007
94 59
 
2.
A person who is a player.

"Damn you Masa, jennifer den amy den mary jane den courtney den kimmy."

Look at player
by bunnii January 16, 2003
76 60
 
3.
A very hot Japanese rockstar. Is in GacktJOB, Gackt's band. Is the guitarist Gackt dry-humped during the Vanilla Live.
"Did you see Gackt and Masa in that live?"
by new days dawn August 17, 2006
39 44