2 definitions by zsteezy

Top Definition
The word is used to describe anything and everything that fits the phrase "bomb as hell".

Derived from the word "chill", as 40 degrees Fahrenheit is a pretty cool temperature; Four-Oh can replace the word "chill" or "cool" in any situation.
1."damn dude your car as dank as hell"

"yeah bro, pretty Four-Oh, huh?"

2. "Dang dude, we've been straight up loungin' for hours

"Yeah, today's been sooo Four-Oh"
by zsteezy September 03, 2009

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Brotein is a bodily chemical that is excreted by the pancreas that creates a euphoric sensation. Brotein is released usually whilst throwing down at a rowdy Pop-Punk and/or Hardcore show.
"Yo man, I feel great, that show was rowdy as hell."
"For sure dude, that's gotta be the brotein."
by zsteezy August 20, 2009

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