A fork of Rural Dictionary
During sex, one partner fills his or her mouth with lucky charms, places a funnel in the other partner's asshole, proceeds to pour milk into the funnel, and drinks the milk out of the asshole. This results in an asshole milk-lucky charm concoction that is magically delicious and sexually arousing.
Man: You want to do an end of the rainbow? Woman: Nah, the funnel doesn't fit anymore, it's too loose.