Nuclear horse piss that is sold as a disgusting energy drink.

Describing anything that is large.

The creature that lives in your closet and under your bed.

A sadistic pedophile who molests and rapes children he abducts.
I tried a monster energy drink the other day, it was the grossest shit i have ever tasted. I poured the rest of it into my neighbor's dogs water dish, the dog caught fire.

Whoa, that fish is a monster.

"Mommy, I need you to look in my closet and check under my bed for monsters."
"For fuck sake Tommy, you're 35 years old. why do you still believe in monsters?"
"Remember when I was kidnapped and raped by that monster in his van. And I still didn't get any free candy."
by A WHITE GUY August 28, 2014
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A performer (musician, athlete, actor, etc.) who is so much more skilled than his peers that his domination of his performance environment is both inspirational and frightening.
Don't disrespect Chaka Khan. Her voice is a little weak now, but in her day she was a monster!
by Ken-Baby June 30, 2010
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1) The thing that hides under your bead when you are from ages 4-8, or later if you're weird...
2) A big-ass thing that's in a shitload of really bad horror movies, used to scare people.
Daddy daddy! There's a monster under my bed!!!
Godzilla is a monster
by Seamus McCabe February 9, 2004
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Wow, Phoebe and Madeline always monsterate so bad around this time of the month.
by The Lone Will February 9, 2011
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