Inland Octopus

The act of inserting eight fingers into the vagina or butthole and wiggling them around vigorously to create intense pleasure and likely an immediate orgasm.

An advanced user can use their thumbs to play with vag bean. Or in reverse, the thumbs can be used to tickle the stink rim.

Every other Saturday the wife and I take turns performing the Inland Octopus on each other. She likes the normal way, and I like it in reverse.