MSS 

A secluded cult of extraordinarily talented indivuals. The cult has been linked to conspiracies such as 'the 2 ratio' and is an open supporter of bolt action rifles, primarily the M40. It is rumoured that new recruits are put through a grulling initiation process at an anti-terrorist training facility in Venezuela. The definition of the abbreviation 'MSS' is a well guarded secret known only by the cults' leaders and most valued members.

'Ahh.. MSS are at the top of the leaderboard..... again'
'Why do MSS pwn us so bad?'
'That guy no-scoped like only an MSS could!'

MSS by M40A1 Whore February 4, 2009

MSS 

MSS (Main Squeeze Security), n.

The security that comes with being someone's bottom bitch.

It provides one with the comfort of knowing that, even though your partner is out fucking other people, they'll always come home to you.

Also known as a Social Security Number for the polyamorous.

Person 1: "How do I know you aint just gonna up and leave me for some hoe?"

Person 2: "Relax girl, you got MSS"

MSS by wellisntthisfunny October 24, 2010

MSS 

Midnight smoke session. usually referring to staying up late smoking weed, or waking up in the middle of the night to get high.

Man I'm tired from that late mss last nigh.

MSS by Ex.Tc June 29, 2011

MSS 

Multiple Semenation Syndrome. To semenate multiple times when ejaculating.

1: Wow that felt like you were firing a machine gun in my vagina.
2: Nope that was my penis. I have MSS.
1:Good. Because if that was a machine gun you would have ripped shit up.

MSS by Captain Care Bear January 1, 2012

MSS 

Short for Mohammed Sayeed-al-Sahaf, former Iraqi Minister of information.

Did you see MSS on CNN? What an idiot!

MSS by Performaman November 3, 2003

MSS 

massive schlong syndrome

“damn that guy has mss”

MSS by pooter22 February 27, 2023

MSS 

Most useless company to ever work on a minesite

MSS are the most useless c**ts onsite

MSS by Unclebarey April 17, 2024