Cotton Candy

A technique of fingering. Sticking one's fingers in a vagina and swirling it around. The swirling motion is meant to be similar to that of making cotton candy. When you make cotton candy, you put a stick in the machine and swirl it around, collecting all the melted sugar and forming cotton candy. The finger in the vagina swirls around like that stick. It isn't trying to collect any cotton candy, so don't get the wrong idea.

Talking about a hot guy:
"He's so fine, he could cotton candy me any day!"