The Act of going down on a girl while she's on her period and currently has a tampon inserted. After tonguing her bean to squirting point, the head giver bites the string of the tampon and jerks it out of her bloody vagina, then proceeds to thrash his/her head back and forth like a pitbull slapping the blood soaked cuntrag across both cheeks until it looks like a big red clown mouth. Best performed on heavy flow days.

Derived from "Squillionaire," "squill" is a dereogatory term for anyone who accumulates, flaunts, hoardes, or otherwise posseses wealth beyond reason.