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Ok, summary time. The word or acronym M.O.S. can have several meanings:

1. Member of the Opposite Sex
2. Mutual Oral Sex (see 69)
3. Make out session
4. "Mom over shoulder", a warning in chatrooms or IMs
5. Ministry of Sound, a nightclub in London UK
6. A short form for mos def, which is a short form for "most definitely".
7. Military Occupational Specialty (US Army)

M.O.S. can also be an abbreviation of a shitload of other terms that are mos def not used in slang. Including Metal-Oxide Semiconductor, Made of Steel, Marine Observation Satellite, Medical Outcomes Study, Member of Service, Mode Of Shipment etc.
Err... recently 2 London grrlz on aim:

A: "So tell me what happened after the party at MoS last night!"
B: "Ok, I was just about to leave when I met this really handsome MOS.
He told me his MOS is Infantryman in the US Army. Guys in uniform just turn me on!"
A: "Sweet, and then? Did you make out with him?"
B: "Yes! We had a good mos in the club and then he asked me if I wanted to come to his place, I said 'mos!'"
A: "Really, so did you...?"
B: "Yeah, when we got there, we started to have some real good MOS..."
A: "Wait, MOS!"
B: "Ok, ttyl ;)"
mos by 007 Bond November 21, 2006
Related Words
mostest mos' moss moshers mosquito mosh mosh pit Mostestest Mosterest moster
Military Occupational Specialty (MOS).
My MOS is Infantryman (11B).
MOS by discharge March 3, 2005
Actually the acronym M.O.S that stands for "Member of the Opposite Sex".


(You must have seen this word in some purity tests around the net)
Have you performed a strip tease for an MOS?
MOS by Giorgio Orizio July 14, 2004
Short for homos or gay people
Guy1: You wanna go to S.F. ?
Guy2: Nah too many 'mos
'mos by Mistahtom January 6, 2006
short for make out session. Used in context with mos it to describe incognito when you are going to make out without having to say it.
Andrew wanted to mos it tonight, but once again was turned down.
Mos by Dmac79 May 23, 2006
"MOS for all these bae's."
"Can you believe my dog ate a squirrel? MOS for the loss."
MOS by Magicsparkleunicorn March 29, 2015
More from Urban Dictionary
The striver is an interesting phenomenon that is seen across college campuses. In essence, the striver is an over-achiever who comes from a working or middle class family. He may be an immigrant. He may have been a slacker in HS who was "born again" into an academic wunderkind. Or he may just be an over-achiever who is keeping at it.

The striver is willing to sacrifice his social life at the expense of Phi Beta Kappa and Summa Cum Laude. The striver is the guy who stays at the library long after you are gone. The striver is the guy who takes 30 credits/semester and considers anything below an A/4.0 failure. The striver doesn't work on campus, he is too busy finding ways to pad his resume instead of working retail or workstudy. The striver lets his grades pay his education by applying to ten scholarships a year.

The striver is a future Soros/Fullbright/Rhodes/Gates/Marshall/etc. fellow. The striver lives to study. For the striver, their fun comes from the rewards they expect to receive in return for their diligence. Be it Law School, B-School, academia, or politics. The striver seeks to find the American Dream through academic success.
Anthony was a striver. He transfered from a TTT to an IVY and graduated in 2 years. He studied his ass off and went to Penn Law. He got a Biglaw offer. But lost it all because of an unmoderated mesasgeboard.

Successful strivers:
- Barack Obama
- Harold Koh
Striver by URM Striver January 3, 2009
Word of the Day on August 15, 2026

SkyPesos 

Delta SkyMiles, also known as SkyPesos, is the frequent flyer program of Delta Airlines. It has a very poor value and hard to use.
- I'm trying to book an award flight to Paris, but I only have 70,000 SkyPesos
- Just forget about it, you don't have enough SkyPesos to fly anywhere.
SkyPesos by 404_name_not_found December 6, 2018
Word of the Day on August 14, 2026

Quiche Peanemis

Quirky niche peak cinema analysis
It describes the analysis of a media piece which is quirky and niche, yet peak.
Give me the quiche peanemis on the movie I missed.
Quiche Peanemis by Mushroom2241 June 17, 2026
Word of the Day on August 13, 2026

Hate Draft

1. Select a player (real or fantasy) during a sports draft to spite or anger one or more of your opponents because they had intended to select him/her.

2. Select a player (real or fantasy) during a sport draft to put one or more of your opponents at a strategic disadvantage.
1. Billy hate drafted Chad OchoCinco because he knew Sam had wanted him since he is from Cincinnati. Billy already had plenty of players to fill that position but wanted to make sure Sam didn't get him.

2. Billy hate drafted Peyton Manning because he was the only good quarterback left and he knew Sam had been planning on drafting him.
Hate Draft by pffler September 1, 2009
Word of the Day on August 12, 2026
"I can pull James Bond stunts in a jalopy."
jalopy by watson November 20, 2002
Word of the Day on August 11, 2026

Utility beer 

Utility beer is the beer you keep around for the day-to-day moments when beer is a necessity to assist in pedestrian activities (golf, plumbing, yardwork, babysitting, staff meetings, Zoom calls). For the beer snob it is the beer you save for neighbors when they drop in at 3 p.m. on a Tuesday. It is differentiated from the actual high-end beer you save for special events, holidays, and special tastings.
Person 1: Dave, did you bring along those hazy craft IPA's so we could drink while cleaning Lyle's pool?
Person 2: Nope. I just have a bunch of utility beer that Steve dumped on me. Good enough for this. It is only 10:30 a.m.
Utility beer by lakeshore February 1, 2022
Word of the Day on August 10, 2026
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