Someone who is known for constantly backing out on plans ("flaking"), often for reasons that are flimsy and/or somewhat insulting ("frosty").
"My friend was supposed to come visit me in the hospital after my round of chemo, but then she called at the last minute to say she couldn't afford to waste her gas on the drive up. I don't know what I was expecting anyway, she's totally frosted flakes."
by Time Lord November 08, 2009
Dried, typically flakey, cum or come on an individual(s) body after ejaculation. They are common on hair and renown for the inability to wash/remove them on first attempt.
Darin took three showers but the frosted flakes on his chest were unusually obstinate and flakey.
by RobertoGville April 22, 2008