When something is extremely cool that there are no other words to describe it so you say frosty.

Really sick

Very totally radical
george: dude i just colored my driveway black!
steve: yo homie its already black!
george: oh damn straight!
steve: your so totally not frosty
by littleboy&friends June 10, 2009
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The act of not washing your hair, thus leaving it greasy. Can also be defined as not taking a shower.
Man, that guy looked so frosty today, I swear I could've styled his hair without hair gel.
by ayrondee October 18, 2009
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It's a sex act, entailing the female to preform fellatio on her partner, and just before climax an ice cube is inserted in his anus, yielding complex and intersting results.

Dude, that girl last night totally gave me a frosty!

No, way! That bitch!

Don't worry, I retalliated with the pirate.
by Gary Barrie January 25, 2006
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Someone who is extremely flaky.

A person that loves to change plans or ditches you at the last minute.

Derived from the cereal, Frosted Flakes.
"I asked Jarrett to hang out today but then he got super frosty with me and decided not to."

"I don't care if you have a wedding to go to, stop being so frosty."

"Don't make any plans with Dubs, I hear he's really frosty."
by IcePick June 2, 2012
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when something is cooler than cool.
dood, thatz cool.
no man, thatz awesome.
dood, that is so frosteh!
yeah, frosteh!
by 007 October 22, 2003
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A cat who walks around and pisses on shit. He also thinks that he's cooler than everybody else who he pwnz.

Examples of Frosty's Daily routine:
1.) Walks around
2.) Eats food
3.) Pisses on shit.
4.) Meows and shit.
"frosty is a mofoin beotch who pisses all over my shit!"
by Frosty Master December 20, 2004
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keeping cool in situations that could potentially be bad. ie. driving around doing drugs with your friends, or going to very public places while on these drugs
by chelsea0000 October 28, 2008
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