Shit Multiplier 

The number by which something is multiplied when prefaced with "shit". This is typically somewhere between 1.5x - 2x. However, many interpretations have placed the shit multiplier as high as 20x.

"Whoa, that is a shit ton of shit." "What shit multiplier are you applying to that shit?"

Shit Multiplier by dwreckmi October 31, 2014

Multinesia 

Popular name for Indonesia in online game e-sim . Most of players use this name for Indonesia because they are masters of creating multi accounts which administrators can't ban.

Random player 1: I just can't make enough gold
Random player 2: Why don't you invite your "brothers" and "sisters" to play?
Random player 1: Hey man I'm not pro from Multinesia I will get ban for doing that

Multinesia by IndoMan February 12, 2013

multilingual 

the ability to speak multiple languages

"Are you multilingual?"
"Yes. I can speak English, Spanish, Chinese, and Hebrew."

multilingual by Ruby Cube July 25, 2016

Multilimb 

A fetish for extra/multiple body parts on a person that is more than what is considered normal. Usually limbs, genitalia, fingers and toes, heads, and sometimes facial features; human or otherwise (in reference to furries).

Sometimes shortened to just "multi".

I was browsing Twitter when I stumbled upon a user focused on posting multilimb content.

Multilimb by IWIWAT March 28, 2023

Multigenerational Mixed Person (MGM) 

A Multigenerational Mixed Person (MGM) is characterized as an individual with a family tree which overlaps multiple racial groups. A 100% white individual and a 100% Asian individual create a First Generational Mixed Person (FGM) who is 50%/50%. If this mixed person chooses to mate with a white person, their offspring will be around 25% Asian 75% white. However, if this mixed person chooses to mate with another mixed person, it could get very complicated to predict. The effect that mixing has on offspring is allegedly beneficial according to scientists & the definition of the term Hybrid Vigor. (GTS)

"Excuse me, I'm not black. I'm a Multigenerational Mixed Person (MGM)"
"Excuse me, I'm not a Jew, I'm MGM."

Multigenerational Mixed Person (MGM) by famousfractal March 20, 2016

douche multiplier 

a person that helps a douche bag act like more of a douche bag

Bobby was totally acting more like a douche bag tonight and I think it was because Billy was the douche multiplier.

douche multiplier by t-muney November 15, 2009

multiviewing 

A specific part of multitasking where one watches two tv shows at the same. It can be extended to generally watching any 2 things at once.

James: Hey John, did u watch the football last night?
John: Na, mate i was watching Family guy instead.
James: Watching Family guy didn't stop me..I was multiviewing

multiviewing by urban great October 5, 2011