Just when your about to skeet in the woman, you donkey punch her so she passes out then you proceed to jiz in between her legs. Next morning when she wakes up from her unconcious state her legs are stuck together and she will waddle like a little penguin, hence the name frosty penguin.

when you're hungover as shit after a spending a night drunk as a skunk

When you put biofreeze on your male genitalia and then participate in sexual intercorse.