reverse regurgitation 

The process of a male ejaculating inside another persons anus(female or male), and the recipient proceeding to use their intestinal track and esophagus to vomit the "load" out of their mouth

"Did you see that? Ronda totally just took that load and performed reverse regurgitation out of her mouth!!"

reverse regurgitation by Big Tom the Adam Bomb November 13, 2011

Reverse Regurgitation 

Eating something that tastes really bad.

Eating those wraps was like pure reverse regurgitation.

Reverse Regurgitation by Batli January 10, 2009