msy 

Australian retail computer/parts stores chain, notoriously infamous for their bad customer service, illegible web site (designed in Microsoft Word, probably) and constant lack of stock, however offering low prices.

- Hey dude, you could've gotten that from MSY for 100$ less!
- Yeah I couldn't be bothered queuing for 50 minutes and then finding out that they have just sold it!

- Go to Dick Smith first, talk to their friendly sales guys, figure out what you want, and the get it cheap at MSY.
- Yes, only if they haven't ran out of it!

msy by Sobol November 14, 2009

MSY 

Masterbating to the Sounds of Yanni

-You wanna do something tonight?
-No, I'm gonna be busy.
-Doing what?
-MSY!

MSY by FZad May 22, 2006

MSY 

Masterbating to the Sounds of Yanni; often used to mean "nothing much" or "just screwing around"

Hey, what are you doing tonight?
Nothing much, just MSY.
Cool.

Hey, you busy?
No, just MSY.
Oh, I see.

MSY by FZad May 23, 2006

MSYG 

Mr. Steal Yo Girl. This is usually a male of any age who is infamous for hooking up with/seducing/causing the break up of other guy's girlfriends/wives. Mr. Steal Yo Girl is almost always in denial and will project his MSYG title onto others, particularly close friends.

Recently, mathematicians have derived a formula to calculate MSYG status:

MSYG= (# of Girls Stolen)^2*(Number of Times Stolen/Girl)

Mike- Hey dude, Donald keeps eyein' my girl, I don't like it.

Ryan- Yeah man, he's widely known as MSYG.

Kyle: I wanna go make moves on Pam, but I think Donny might be tryin' to hit that.
Ryan: Nah man, Pam's single, Donald is MSYG.

Donald: That's BS, I am not MSYG, you are!

MSYG by ElDoctorRyan February 21, 2015

msyke 

1) Someone that feels compelled to spell check and point out everyone's spelling and grammar errors is labelled a "mskye"
2) a walking f7 button
3) When you correct someone on a extremely minor spelling error you are "msyking" them.

4) If you have made a seemingly inconsequential error in spelling or grammar and someone points it you have been "mskyed"

eg 1. "woahhh did you see what she how she forgot to put the apostrophe in the word "they're" Mannnnnn you better msyke that chick."

eg 2: "i pointed out that she should so know by now that "definitely" as not spelt "definately". She's been m-syked."

msyke by donth8theplaya April 20, 2010

MSYG 

mr steal yo girl

msyg is short from its mr steal yo girl from bottoms up from trey songs

MSYG by msyg October 26, 2010

MSYHMO 

Make Sure You Help Me Out

I am really busy this weekend, so msyhmo.

MSYHMO by fake_oddity June 29, 2010