Homer's failed attempt at building an outdoor barbecue leads him into the world of outsider art.

!! Tropes:

* BookDumb: When Homer tried to read the assembly instructions in French, he got stumped at "Le Grille".
* ItsTheSameNowItSucks: Happens InUniverse, as Homer's second art piece is panned by critics for being too much like his failed barbeque.
* GreenEyedMonster[=/=]{{Jerkass}}}: Monster way not be the right word, but Marge is nothing but bitter and unsupportive of Homer when he tries to be an outsider artist because she's unhappy that Homer made more progress in a week then she ever has been until he fails.
* LeaningOnTheFourthWall: After Homer badmouthes MattGroening, a huge pencil with eraser seems to erase Homer, but it's just two guys carrying a really huge pencil.
* OneHitWonder: Homer's art is this InUniverse, something Marge is aware of.
* TrueArtIsIncomprehensible: Invoked in Homer's art style.