when theres pretty much no ice left in the ice tray and all thats left is frost, that tastes kind of like snow or salty freezer. Can also be used metiphorically to mean the last of something or the one that nobody wants.
I was getting ready to pour some ice tea, but when i got to the freezer all that was left was scrap ice.

Everyone in PE was picked for dodgeball except the usual scrap ice.
by Ande Withers March 3, 2008
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