A mullet, usually found on H. Sapiens Lesibianus-Arkansensis, the long back portion of which is not only permed, but frosted.
That is one fine permafrost mullett on that lesbian up ahead!
by Mike-N-Tally June 14, 2004

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Top Definition
Frost that can never ever ever melt or else it wouldn't be PERMAfrost.
Silly environmentalists are concerned about permafrost melting, which goes to show just how rational environmentalists really are.
by rmk- July 10, 2008

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The state in which ground is "permanently" frozen.
The condition in TryMe's pants.
Tryme is suffering from "permafrost".
by Bastard August 21, 2003

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hydroponic marijuana distributed among emo kids and sophomores at ike. n00bs think it is special and the best bud in the world, but is actually just normal dros, and given the name to make it sound special. kids who like permafrost normally smoke schwag or bc's and have never smoked real bud.
yo kermit pass me dat permafrost
by budman420 June 04, 2007

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