gastro blast 

When you have such a huge fart that you shit in your pants and it blasts in your boxers.

Jimmy laughed so hard that he had a gastro blast.

gastro blast by ryan paul May 3, 2006

Gastroplastectomy 

A surgical procedure in which a section of Plexiglass is inserted onto one's abdomen, allowing one to see out while one's head is up one's ass.

Jesus, Bob is a walking cluster fuck. We need to get him a gastroplastectomy for Christmas.

Gastroplastectomy by TheJohnykat July 15, 2011