1 definition by dust.dust.dust.123
Stands for Maximus Glucius Maximus Syndrome. Is when a person has an unusually huge ass. Derived from Latin.
Emily: I think my ass is bigger than it should be.
Alfie: Don't be so harsh on yourself.
Emily: I'm not, I think I might just have MGMS.
Alfie: Don't be so harsh on yourself.
Emily: I'm not, I think I might just have MGMS.
by dust.dust.dust.123 September 30, 2009