greased cheeks 

The result of a wet fart, or a particularly juice shart.

I thought I could sneak one out, but I ended up with greased cheeks, so I had to go for a maintenance wipe.

greased cheeks by FIATC February 1, 2009

Grease cheeks 

Pat Hutchison has the title of "Grease Cheeks due to his constant wet flatulence.

We went over to Grease Cheeks house to hang out after work

Grease cheeks by frankfurter8675309 November 5, 2017

Grease Cheek 

When you don't wipe yourself well enough after defecation, and residual feces begins to smear itself between your cheeks.

Feels like I got a case of grease cheek. I'll be right back.

Grease Cheek by Beardy McBearderson January 21, 2021