Anastomosis: medical term meaning the connection or joining of two tubular structures.
A penetrative sex act where the receiving partner has a colostomy or ileostomy. The penetrative partner then fucks the anus (blind pouch) while reaching down and eating out the ostomy. Fingering the ostomy is accepted for half points.
Can be reversed by performing a Philadelphia Sidecar while simultaneously eating the ass.
" did you hear about Charlene's accident? She's lucky to be alive but she has to shit in a bag."
" Of course I heard. I called her last night to schedule her a nasty Moses."