the obscure justification or defense for a belief or opinion based on counterfactual or fictionalized facts.
by jsterry23 April 18, 2009

1. Noun: When you can't remember something silly like the name of the street you grew up on. It's similar to a brain fart.
2. Noun: Something that is so disturbing/ ugly/ stupid/ painful, etc that it hurts your brain to think about.
2. Noun: Something that is so disturbing/ ugly/ stupid/ painful, etc that it hurts your brain to think about.
1. What's her name again?.... Ummm... Ugh, what a mental mullet .
2. Omg, how embarrassing that was. What a mental mullet .
2. Omg, how embarrassing that was. What a mental mullet .
by ThatGirlPeach November 8, 2017

by Scott Burton January 4, 2009

To retain a thought-process in accordance with one’s own personal agenda; to not give a flying fuck about anyone else. This usually comes with an air of arrogance, and (sometimes) slight douchebaggery .
Example one:
Matt: That kid is a prick
Derek: He got that icicle mentality.
Example two:
Alex: you seem unfazed by their insults, but how?
Brett: it’s icicle mentality.
Matt: That kid is a prick
Derek: He got that icicle mentality.
Example two:
Alex: you seem unfazed by their insults, but how?
Brett: it’s icicle mentality.
by Achilles De Flandre June 8, 2018

When ones mind shuts off in the winter and does nothing causing any mental/physical stress, even hanging out with friends.
Don't give a fuck about anything anymore.
Don't give a fuck about anything anymore.
Person A: "Hey why won't you talk to me and hang out with me anymore?"
Person B: "Because I'm in mental hibernation."
Person B: "Because I'm in mental hibernation."
by Meytal Mantzur April 3, 2012

When one or more individuals lack genuine debate skills, and instead elect to using name calling, schoolyard insults, and generally things equivalent to pulling somebodies pants to their ankles.
by Shlomophobe July 11, 2020

"I ran into 5 guys, I had the "Juggernaut Mentality" thinking i could take them all on at once and got my ass kicked" Your not the Juggernaut, bitch.
by laggin July 13, 2010
