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The biggest piece of shit out there. 300+ lbs. but not muscular. Tall and fat. Huge self-centered narssasistic asshole with an incredibly large ego and multiple personas. Tries to act and talk like he's Italian and constantly talks about "the family" or how he's in the mob. Realistically is less than 25 percent Italian and is a part of a want to be Russian mob or gang. Though may make it seem like he's high up there is probably a bottom feeder tech guy. Lies to make certain impressions on you. Often has the idea that he is the greatest being in existence. Extremely close minded. Very stupid, sucky liar though will not admit any form of imperfection. Basically very very very thick skull to make up for space the brain should have but does not. When it all comes down to it he verbally says things good about himself and all things stated above to fool himself and others into thinking he is all that. When in the end he is a lowly bottom of the food chain bug with a low self esteem and a look of fear in his eyes. If you look In his eyes you can see and smell the fear radiating. Never learns and is practically unhelpable. Must use extreme tactics in all situations with him. Also has pro crime attitude. Can be whipped easily if attracted to you but not tame. Will annoy you and screw you over. Never does anything for anyone but himself no matter how it seems there is a hidden motive.
Nick: who is that fat fuck? He forced his mom to get out of the car and sit in the back and said "big man don't get in back seat"
Stranger: that's big mike...
Big Mike by FMT November 9, 2014
Related Words

dirty mike

a young teen who doesnt bathe for a long period of time and is likely to be nicknamed spick in reference of the oder and appearance
dirty mike by vince black June 29, 2006

Psycho Mike 

A Mexican on Loveline that is part of the MWSP(Men With Small Penises) who can change his voice into a gay former inmate, a dude that made a 'sick' Religion, and an insane indian guy that has special issues. Constantly having awkward moments with his hidden homosexuality on air, and is an awesome co-host on the show. He is known for bringing the 'Stinky Pinky' game to light on air, which may sound like a crude sexual act, but it a children's word game.
Psycho Mike did such a good Spencer impression last night, I totally thought there was a gay priest as a guest on loveline!
Psycho Mike by Palistus November 9, 2010
A person who has a problem with his own weight, and tends to be annoying by calling themselves "Big Mike" like it's a good thing.
"I'm fat albert" ... same situation. "I'm Big Mike"
Big Mike by cowlippedblowjob June 22, 2016

Kelvin and Mike 

Not so ambiguously gay duo. When their powers combine they become the ultimate douche bags. Like captain planet but in reverse.
Look at those two guys stealing candy from a baby, they're like Kelvin and Mike.

Person 1: Why are those two guys grabbing those guy's butts?
Person 2: Because they're Kelvin and Mike
Fat Mike by Miss Marie K March 17, 2008