Tagline: "Here's your ass pad, son." -Zipped Willie
Near the beginning of the episode when the Hill's are having dinner, you can see Hank's glass in the first shot is to his left. Next shot it's to his right.
Whilst Bobby is first talking to the rodeo clown, the guy in the red shirt has some red paint under his nose. When the angle changes and shows both clowns the red paint has disappeared.
When Bobby is trying out for the cattle roping at the rodeo, he gets the rope tightly around the calf's neck. As the calf starts to drag Bobby you can see the rope is now very loose around its neck. A little later when the clowns are chasing each other the rope is back tightly around the calf's neck. May be deliberate as it may look like the calf would have been choked with the rope being so tight around its neck.
Hank: Cheer up Bobby, except for the cowboy and the man who straps the bull's genitals, there's nobody more important than the friend cheering in the stand.
Dooley: Your lunch money had a Canadian quarter.
Bobby: The baby routine doesn't work. It's all talk. When the diaper explodes, we're like, "finally!" Then the doctor comes out and his bag explodes. What the heck does that mean? There's a logic to an exploding diaper gag. Kid cut a fart, fine. Why would the bag explode?
Chet: We've been doing the baby routine for twenty years.
Bobby: Why does that not surprise me? You need to get out of your ivory tower and see what's happening on the street. Give the baby a giant bottle. He can hit you with it, he can squirt you with it. Now I'm laughing!
Hank: (to Bobby) Son, you're going to be up against farm boys. But we've fed you like a farm boy, so go get 'em.
Bobby: (to a cow-shaped propane tank) So, is it premium or have you been regular?
Joseph: Guess what Dad, I won another contest! I was so good they made me take a drug test!
Ben Cartwright is a character from the show cowboy show "Bonanza". He was played by Lorne Greene.
Tomb Raider is an actual video game, and the "girl" that Bobby would be playing as is Laura Croft.
Joan Rivers: Joan Rivers is a comedian who is known for making fun of fellow celebrities, especially at Red Carpet events.
The title of this episode "Rodeo Days" is a play on the title of the movie Radio Days.