An impractical machine used for combat purposes. Appearing in almost every anime, they are seen as all-powerful robot suits that are usually piloted by humans. In real life, a mech would be powerless. Due to inefficent legs and humanoid look, a mech would be an easy target, and once the legs are taken out, the machine's impracticality is exposed.
While many nerds are constantly seen raving about Megazord or Zoids one of those filthy excuses for weaponry could be taken down by a modern fighter plane.
by Pete January 14, 2004
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Mechanically Enchanced Cybernetic Humanoid. A guild of retards on various online roleplaying games that think they are robots. They started on the old school Neverwinter Nights as far as I can tell, and proceeded to infect many other games over time.
"Hey, what does MECH mean in that guys name?"

"I think it's Mechanically Enhanced Cocksucking Homosexual."
by Rice Sucks April 8, 2005
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God I'm so tired I just spent the last 14 hours in lab, as a meche I'm basically like a physicist, and a mathematician AND a computer scientist. Sorry what was your question again?
by sosuso May 18, 2020
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A cool dude who really likes the way BUNG rolls off his tongue.

He likes animals and can be counted on to have quite a variety of them at any given time.
Connie: Ask Meche' to say bung.
Andy: Right now? He is busy feeding the animals.
Connie: Just do it.
Andy: Hey Meche', say bung!
Meche': BUNNNNNG
by Connizzle July 31, 2011
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One of the nicknames for Mercedes car
(most of car brands have nicknames like.. Lamborghini = lambo, Chevrolet = chevy etc..)
I bought new meche yesterday! Its all black with white leather interior
by Bbygoat June 11, 2020
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1. Greatest Marine ever

2. Jesus Christ himself was the first seat mech, he joined the marine corps in the year 1 and retired as a Sgt Maj in the year 2... yah he was that awesome.

3. Has slept with every known hot woman in the world... leaves all the fat chicks for powerline and ordnance

4. Every seat mech has kicked Chuck Norris' ass at least once.
All the Hot chicks in the world: "WOW seat mech's are the best!"

Jesus: "I remember when i was a seat mech!"

Chuck Norris: "Holy crap if another seat mech whoops my ass im gonna just roundhouse kick myself to death"
by Seatmech March 29, 2008
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A robot looking thing commonly used by pussies. Originated by some guy that was on weed using weed as a straw to drink his beer his favorite number 420 hmm.
bro this guys just killed me with a B.R.U.T.E/Mech what a pussy
by Kangaroo124 August 16, 2019
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