MSN

'M'icro'S'oft 'N'etwork.

But it's commonly referred to as the Instant Messenging client.
MSN is the best IM, IMO. Alot better than AIM and YIM, and I've had both, and they suck, reinstalled them a few months ago.

MSN looks alot better, better and easier to use, isn't as dull, etc.

MSN >>>> AIM>YIM
MSN is the most popular IM client.
Why does all the American kids use AIM?

by Mr.DeepthroatDatX March 8, 2008

MSN

MSN is one of if not the strongest Class A* drugs known to man. An abbreviation For Most Snorted Narcotic, originally designed for Sleeping purpose through tablet swallowing, was discovered to give an insane high when crushed and snorted. This drug resulted in many deaths said to be of cancer, such as David Bowie and Alan Rickman., however this was simply MSN's overdose which shares the symptoms of cancer. MSN being the strongest Class A* drug, followed by AOL , NTL and CNN

Stoner 1:Yo guys, I got some of that MSN
Stoner 2: Holy shit that stuff is fucking awesome.

by 5YearOldBoyWithASidewaysCunt August 19, 2016

MSN

Some stupid thing that people go onto to take time out of their dull, lifeless lives.....something with emoticons, and something to use to talk to your best friends girlfriend, making her feel jealous, because she lives in a different time zone....mwahahaha

Stupid butterfly wont FLAP!!!! Msn, help me puh-leaze....

by Anonymous June 7, 2003

MSN

To sexually harrass someone on a messenger program.

If you don't stop fucking MSNing me I'll tell the cops!

by k9norn November 11, 2003

MSN

MSN stands for the MicroSoft Network most people use it for the MSN Messenger

Fred: Hi, you goin on MSN?
Bob: Yeah, when I get home

by danspy1994 October 9, 2008

MSN

addictive program used to communicate with people you like and dislike, often consisting of stir frys and soup pots which provides no use but some temporary enertainment from a boring life of dieting and working, and somehow is the thing you most look forward to once home from school except for listening to reel big fish

so i said to the guy 'red mnm, green mnm, they all wind up the same colour in the end'

by Jizzles March 16, 2003

guerilla MSN

The act of logging in to MSN Messenger (or some other messenger service), opening a conversation with another person with the sole purpose of cursing them out, and then signing off before the other party has the chance to respond.

Kimmy says:
fuck you

Kimmy may not respond because he or she appears to be offline.

by C.T. May 22, 2005