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."
1) an eating-disorder-ridden, indecisive, eager-to-please perfectionist
2) a sweet, unassuming virgin who is most likely quiet and timid, speaking more with noises (hm, oh, mm) and sound bites (fun, sounds good, whatever you want to do) than actual words, often accompanied by excessive eye-lash batting and pursing of lips. see mary with a twist
3. prude, but with sooo much potential i.e. perfection
1) man you couldn’t decide on what food to order and now you're not eating it.... you going mary kate on me?
2a) i dated some britneys but I'm marrying a mary kate
2b) good luck they are a dying breed....
3a) man, all the girls at this party are whores… wait a second, who’s that hottie?
3b) that’s mary kate. she’s gorgeous, but she’s waiting til marriage.
3a) damn.
to force one's self to puke as in fashion with the olsen twin
i had so much pizza i had to pull a mary-kate, no dumbass i didn't take it up the ass, i puked.
a girl i am in love with even though i'm a straight girl.
mary-kate olsen is the prettiest girl alive.
"that girl is a mary-kate"
an action verb meaning "to vomit"
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.
an idol to teen girls everywhere
we love you mk! wanna do some lines later?
my alter ego. the prettiest girl in the world!!!!!!!!!!
wearing big sunglasses makes me so mary-kate.