Stands for Jinger Man Syndrome. When a ginger haired people think that they are special due to the fact that they are ginger. Most people with JMS also are upcoming rappers. It can also more generally be used to describe trash .
Joe: This food is terrible.
John: I know it's just like JMS.
by JMS FANPAGE June 26, 2021
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JMS is used mainly on the internet, and is simply an abbreviation for 'Just Making Sure'.
Noob1: Hey, make me a sammich.

Noob2: Did you say you wanted me to make you a sammich?

Noob1: Yeah.

Noob2: Alright, JMS.
by DoraTheRapist August 11, 2010
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Jack My Swag. Made popular by Jenna Rose in her song "My Jeans".
Hahahaha, JMS.
by Trazzle April 29, 2011
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JACKING MY STEEZ, and exclamation used when niggaz be on ur threads
by I am the boss December 22, 2009
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JUGGALO MOB SQUAD 916 OP

oak park nigga!

you roll wit da JMS?

hell yeah!

down wit da clown 4 life!
by lette4life[OP] March 27, 2008
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