When the temperature affects ones mood in a chilly manner. Targeting a figurative vagina.
Example: James "It's so cold here"

Kelly "Yeah, it's really cold here too"

James "It's not like it's 23 fucking degrees there, so shut up."

Kelly "Woah, sounds like you've got a case of frost lips."
by KD2 November 28, 2013
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When trying to ejaculate in your girl's mouth and it gets messy on her lips. The semen on her lips is called lip frosting.
I was so excited last night while my girlfriend was giving me a rim job that I accidentally gave her a little bit of lip frosting. She should really learn to keep her mouth open wider.
by Conkity December 28, 2016
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