After a powerful blow to the head, Mr. Gus unwittingly becomes the funniest guy in the RV. A jealous Pizza Steve attempts to get the old Mr. Gus back by hitting him in the head with things.
When the RV's talking computer system malfunctions, Uncle Grandpa and the gang must figure out a way to stop the rogue computer and restore life in the RV back to normal. Special Guest: Weird Al Yankovic.
When Uncle Grandpa gets a watermelon stuck in his mouth, he is unable to ask for help and people interpret it as a comedy routine. As Uncle Grandpa's popularity rises, his friendships and morale suffer.
When Uncle Grandpa and the crew all have the same popular and hard-to-find gift in mind for their Secret Santa, their nice Christmas shopping trip to the mall turns into a crazy competition.
Pizza Steve's father comes to visit the gang and almost immediately gets on their nerves with his over the top antics. Pizza Steve must get rid of his dad, and prove to himself that he doesn't need to live in his father's shadow any longer.
When Uncle Grandpa runs out of mustaches, he travels to the mustache tree to stock up. But upon arrival, it seems a new clan of elves have become very territorial over the tree. Now Uncle Grandpa and the gang must fight in order to obtain a new 'stache.