Mogar is the Metal-Rock Persona of Harold, also known as Billy's father from the T.V. show Grim Adventures of Billy and Mandy in the episode "Battle of the Bands". He lurks in the audience of a Battle of the Bands concert (apparently in a similar attire to that of a KISS band member) and swoops out to attack the winning band. After a loud battle cry, Mogar flies toward the enemy before realizing the physical improbability and crashing down, wrecking the stage.

Calling someone a Mogar would be a poser in a sense where it's also acceptable in a funny sense of the word. See clown or idiot.
1) Billy: "Hey dad, if we're competing in the battle of the bands contest, then why aren't we on stage? DAD!"

Harold: "I'm not dad tonight Billy, I'm..MOGAR!

Billy: "Eh yeah, yeah okay, Moooggaarrr, then why are we up here in the audience?"

"Mogar": "This is the battle of the bands right?"

Billy: "Right!"

"Mogar": "Then....on my signal...we attack the stage. Let's ROCK!"

2) "Dude, we're going to a Beatles Tribute concert, don't wear that Kiss make-up. God, you're such a Mogar!"
by Politicallyuncaring November 9, 2010
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A 50 inch living dildo with small arms and legs, who habitually plows through concrete walls. He screams very loudly, despite not having a mouth, or any real organs. Mogar is coming after YOU!!!!!
Man 1: I was watching TV the other day when Mogar barged his way into my house and dove headfirst into my girlfriend.

Man 2: Is she okay?

Man 1: The doctors say she may never recover from the damage he did.

*Mogar busts in through the wall*

Mogar: BLAAAAARGGGHHH!!!!!!!!

Man 1 and 2: OH SHIT! RUUUUN!!!!!
by Psychopath Killa September 24, 2005
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Mogar is the name of the world in which Lith Verhen lives. Mogar is also used to refer to the will of the world, an entity that is seemingly a sentient incarnation of the planet. It doesn't care for single races or continents, only about the balance. The only individuals it takes an interest in are those it considers possible candidates for the role of Guardian. Mogar appears in a separate form to different people: to Salaark Mogar appears as a blood-stained beast, to Tyris as a pregnant woman, and to Leegaain as the World Tree. It has 5-6 continents, of which three are known.
instead of ''what on Earth'' they use ''What on Mogar''
by Tiamat | The sexiest of Demons January 17, 2022
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FreeMogar2013
by Micoo November 21, 2013
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Is a machine that contains a vibrating dildo and/or anal pleasuring devices, that are strapped on to the user.
Joey strapped on his mogar before he enjoyed the porn movie
Betty strapped on her mogar before she went to bed
by Dianna G. Weishal August 8, 2007
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The act of punching your girl in the face, slamming her head down, then proceeding to have anal intercourse with her.
My girl wasnt in the mood last night, so i pulled The Mogar Smash on her.
by exonautic October 15, 2014
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The ejaculate of the warrior Mogar. If consumed it will yield effects similar to that of spinach to Pop Eye and turn the drinker in to the son of Mogar.
Gavin repeatedly suffocated on the moon until he sipped the Mogar cum. as the son of Mogar he no longer required oxygen and is free to defend the moon base from evolved moon mobs.
by HarryTPHD February 3, 2014
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