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1.
A person or thing which takes a ridiculous amount of time to perform a certain task, esp. in the instance of causing someone to have to wait for a very long time. Originally named after the infamous pro wrestling championship belt company JMAR, which is known for literally taking years to make belts for clients.
I ended up waiting at the store forever because the lady at the check out was such a JMAR.

This slow ass computer is being a JMAR.

I was late to work because I got stuck driving behind some JMAR.
by Curtis W. Coombs October 29, 2006
 
2.
A term often used to describe an individual who not only lives like a celebrity, but gets action from massive amounts of ladies each day. JMARS is often used as the international term for "God's Gift To The World", and if you ever saw a JMARS you'd understand why. JMARS has been said to reside on the same slant as Chuck Norris when it comes to being superior to the rest of man kind.
1. JMARS once made a mistake on purpose to experince failure
2. "Did you see JMARS getting molested by thousands of hot chicks?"
3. "I really wish JMARS would give me his autograph"
4. "JMARS let me touch him for charity"
by Que Es La Vida December 02, 2009