This test pilot was pitched to Cartoon Network in 2004 by Rocko's Modern Life creator Joe Murray in hopes of producing an all new animated series, and served as the prototype version of the first episode "Gone Fishin' (Sort of)".
When asked by a Reddit user, Joe Murray replied with this comment: "The pilot was remade into a full episode with Lumpus getting eaten by a lake monster. I'm not sure where the original version is. Somewhere in the archives of Cartoon Network."