Irish Octopus
The act of shoving four fingers in the pussy and four fingers in the asshole. Spread fingers post-insertion. Wiggle furiously. Now you're administering the Irish Octopus. Why Irish, you might ask? Because one of you better be drunk whilst doing so.
Yo man, dis drunk beotch be soo gapped I had to give her the old Irish Octopus for her to get off.