When a dude take a piss with so much force it creates a splash-back, and spray pattern on the walls, toilet paper, and dislodges crap-spackle. Can be accompanied by an escapee or sharts.
My High Velocity Urine HVU was so strong I took out the crap-spackle that was stuck under the toilet rim from three weeks ago.
Literally Skin on Gravy, it forms on top of gravy that has been sitting out for too long. Dry Gravy Topcoat, similar to Jello Skin.
How Long has this gravy been sitting here? It's got a nice shell of Gravy Skin - Just the way I like it!