To vomit profusely or to make yourself vomit. A direct referance to Mary-Kate Olsen's eating disorder.
"That chinese food got the best of me. I might have to go mary-kate that shit up, here in a minute."
by Amy Christ April 29, 2005
Get the mary-katemug. by the February 16, 2005
Get the mary-katemug. a girl i am in love with even though i'm a straight girl.
mary-kate olsen is the prettiest girl alive.
mary-kate olsen is the prettiest girl alive.
"that girl is a mary-kate"
by Lindsay March 23, 2005
Get the mary-katemug. While I was sitting on my couch, I ate a 3 day-old moldy hot dog and immediately mary-kated all over the coffee table.
by Justin Koehler February 16, 2005
Get the mary-katemug. by jjwinaba March 31, 2005
Get the mary-katemug. my alter ego. the prettiest girl in the world!!!!!!!!!!
by nicole April 14, 2005
Get the mary-katemug. by lalalalalalala8884576877534786 October 9, 2008
Get the mary-katemug.