Top definition
When something is unbelievably crazy.

It is used instead of nuts when describing a person, place or thing.
EXAMPLE 1:

Person 1: Mate did you see that guy juggling like 10 balls at once on TV last night?

Person 2: Yeah man, it was firenuts!

EXAMPLE 2:

Person 1: Last night, I pulled an all-nighter watching Vampire Diaries

Person 2: You're firenuts.
by elliesmellie1234 November 13, 2010
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Sep 11 Word of the Day
when you're hungover as shit after a spending a night drunk as a skunk
I'm hungover as a duck let's go get some grub
by pokeythepony June 25, 2021
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2
A Fire Nut is the act of rubbing gasoline on the tip of the male genitalia and as he ejaculates he lights the tip of his cock and a burst of spewing flames exits the urethra. The name is self explanatory and is often performed as a form of sexual pleasure.
Guy 1: I obliterated my girlfriends face last night with a Fire Nut.

Guy 2: Is she okay man i hear Fire Nuts are pretty dangerous?
by SlimmAl May 10, 2020
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