Martial arts students and instructors are often covered in sweat. Infected bodily fluids, shed skin, and sometimes body lice will make their way into the mats that absorbs the impact from their controlled falls. If these mats remain unwashed for many months, skin infections can manifest (being a contact sport, martial artists are often prone to breaks in the skin leaving them vulnerable to infection. This is a broad term that defines any skin condition contracted from dirty dojo mats.
guy #1: Heya bud, what's with that rash all over your face and arms? That's not contagious is it?
guy #2: Nah, just a case of the mat herpes. I took a couple dives last night in karate class, and...uh...woke up like this.
guy #1: Maybe they should clean their mats. Sorry dude.
guy #2: Meh....
guy #2: Nah, just a case of the mat herpes. I took a couple dives last night in karate class, and...uh...woke up like this.
guy #1: Maybe they should clean their mats. Sorry dude.
guy #2: Meh....
by kevthenurse August 25, 2013

Wonderful, Loving, Awesome, Fantastic, Great, Hilarious, Overly sexual being who you can't imagine your life without. He's one of a kind, and ALWAYS needs affection.
by 59HA November 26, 2010

A very common word used by chinese people have similar meanning as "what the fuck"/what you want or what is happening depending on the situation.
You have been calling me since last night, mat 7 you want ; This guy mat 7, why he acting like idiot ; cibai lanjiao this guy mat 7 so urgly one
by gugujiao man March 18, 2019

by bcs82000 October 11, 2018

Basically a rug burn that is caused by skin rubbing across a mat. Usualy happens in Brazilian jiu jitsu.
by Kimura August 15, 2016

by RT Rules June 11, 2018

Unlike a Hot Carl, a Mat Carl is when a guy puts on a strap-on backwards (sitcking out from his ass), and butt-fucks another guy with it.
by Slug Football Draft July 20, 2008
