To be extremely high after smoking.
Damn, I already feel frosty after one hit.
by senior salty snacks September 01, 2013

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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 02, 2012

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To be frosty is to be or do anything awesome, sick, or hilarious. People who call themselves frosty, such as naming your gamer tag FROSTYCOWZZZ is looked down upon. Only bros call each other Frosty. If your bro says something is Frosty, you are expected to acknowledge it and yell FROSTY!
Bro 1: You see that lax game last night bro?
Bro 2: Yeah! That dude on Syracuse had a frosty snipe!

Example 2

Guy 1: I am so FROSTY!

Guy 2: No you're not. That was the opposite of frosty.
by FrostyDangles21 March 14, 2012

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It means Cool, or Fresh.
Damn that new car is Frosty
by 219Crew November 04, 2007

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A substitute word for cool, awsome, sick, or anything like that.
-Dude did you see the frosty kick flip?

-Yea man it was so cool.

-Dude...its frosty not cool.

*awkward silence*

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Originates from when a man has lots of gel in his hair (so it shimmers in light, like frost.) An adjective commonly used to explain a particularly feminine guy...or just a gay dude.
Taylor Lautner looks real frosty in that white, buttoned-up, Italian jacket.

Lance Bass is so frosty.

by CandyCaneGirl December 19, 2008

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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
alright dude, chill, stay frosty
by chelsea0000 October 28, 2008

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