Mentally Obese 

One who has/thinks they have a great deal of knowledge, but grossly overuses it.

Someone who, at a party, always finds people walking away from them muttering " What a loser. Doesn't he have anything better to do?" after quoting useless and/or inaccurate statistics to make him look more interesting.

A person that uses their knowledge/feigned knowledge to make someone feel inferior for no other reason than to feel intellectually superior.

Man at a party: "Discount our neighbors to the east and I think you'll find we've got a sleeping giant on our hands. A veritable sleeping giant."

Everyone else at the party: "What a loser. He is so mentally obese that there should be a Richard Simmons work out tape dedicated to him."

Mentally Obese by Serendipidity August 14, 2011

mentally retired 

1. a more polite version of mentally retarded. when one is not born with mental deficiencies, but instead develops these traits due to ones own failings.

2. someone who has simply given up and has mentally dropped out of productive society.

That guy over there shopping in the crocks and sweat pants looks so mentally retired.

mentally retired by bettydog November 9, 2012

Mentally tasered 

When one talks confidently about a possible situation that might arise and then when the situation actually happens they get mentally tasered, or handle the situation completely different from how they claimed they would, usually by whoever they were talking about easily "over powering" in the situation.

John: This isn't a good idea. I got pulled over by a cop last night for staying out past curfew like this skating.

George: Ha! Wow you're a pussy. Stop worrying. If a cop even tried pulling me over for that I would pull out my knife and cut his ass.

*Red and blue lights flash and a police officer approaches the 2 of them*

Cop: What are you two doing out this late? It's past the local curfew.

George: H-hello officer we we're j-just taking a walk and enjoying th-the weather.

John: Wow, so much for acting like a tough guy huh George?

George: Shut up I got mentally tasered asshole!

Mentally tasered by Dj Djuric July 21, 2009

metalligasm 

Act of having an orgasum due to the fact that METALLICA is in the same arena as you.

While I was at the metallica concert I totally had a metalligasm. It felt great!

metalligasm by k sweezy11334571727272 January 17, 2009

Metallifuckingca 

Best metal band ever! Straight up kickass music! Though their new stuff isn't as good as their old stuff, you know it's still the shit! METALLICA RULES!! Napster ain't shit anyways!

DEvIL HORNS AND METALLICA!! METALLIFUCKINGCA!!!!!!

Metallifuckingca by Anonynonymas May 24, 2005

Old Metallica

As said by Metallica fans:

Also known as early Metallica. A time period in Metallicas lifetime when their highest quality music was produced and before they sold out to the music industry and became complete hypercrites. Usually the time period is before Load or the Black Album was released, depending on how you look at it.

Kill 'Em All, Ride the Lightning, Master of Puppets, And Justice for All

OR

Kill 'Em All, Ride the Lightning, Master of Puppets, And Justice for All, Metallica(Black Album)

Old Metallica by Arm April 22, 2004

metallica 

an awesome heavy metal band that helped pioneer metal and keep it alive and needs no introduction

Metallica is the greatest music pioneer ever

metallica by DanMo August 25, 2005