sloppy or messy
I spilled oil, spaghetti sauce and clam juice on my hands, and now they are all gorpy.
Overly thick and gooey, specifically when used to describe something that can be spread, like icing, frosting, peanut-butter and jelly, cream.
The icing on the cake was really gorpy. There was more icing than cake.
The surface of that oil painting looks really gorpy. The paint is dripping off of it.