When Bobby looks out his window and sees Joe Jack and Enrique delivering the BBQ, they look different from their usual selves (i.e. hair color), but then when it shows them putting it in the back yard they look normal.
Dale's van was presumably converted into The Beef-a-bago for the tag-along trip to the Meat Evaluation State Finals. A large T-bone steak replaced the usual giant Dead Bug on the van roof. Previously shown to be a Chrysler Magic Wagon cargo version as Dale's exterminator working truck, it now has two rows of passenger seating and is carried eleven persons comfortably plus a live calf mascot behind the rear bench.
The final line of the series is "Yep" (said by Bobby), which was the first line of the series (said by Bill). Also the episode ended with a view of the Arlen Water Tower, which is how the show started. In this episode the camera pans up to the tower, while in the first episode it panned down from it. These two things show the series has come full circle.
It is revealed in this episode that Boomhauer is a Texas Ranger. He drops his badge on his dresser at the end of the episode.
Hank : (While checking a steak) Firm but with a little give. Yep. These are medium rare.
Bobby: What if somebody wants theirs well done?
Hank : We ask them politely, yet firmly, to leave.
(while out to dinner with his team, Bobby discovers how truly disturbing the other members are)
Hank: How was dinner? Did you eat lots of protein and say some prayers?
Bobby: We did neither, unless you consider eggs protein.
Hank: I do not.
Bobby: Turns out those meat team people are a bunch of weirdos.
Hank: A boy who has a unicorn ranch in his bedroom shouldn't call other people weird.
Bobby (after Hank's encouragement): You know, dad, usually your pep talks go in one ear and out the other, but this time, I'm feeling the pep!
(Bobby has just learned about the meat examination team)
Bobby: Dad! How come you never told me about this?!?!?
Hank: Because you never like anything good!
Hank: If I had a nickel for every time I buckled under pressure, I'd have five nickels.
Bobby: Can I, Dad? Can I join the team?
Hank: I have been waiting 13 years for you to ask me that. Absolutely.
Hank: I haven't even had breakfast and that boy ain't right.
Lucky: I've often thought my profile bears a striking resemblance to a New York strip.
Waiter: Two Kansas City strips, medium rare.
Bobby: Excuse me, sir, there's something wrong with our steaks. These should be prime, and this isn't the marbling for prime. It's fatty in all the wrong places.
Hank: Bobby, don't insult a man's steak before tasting it – you'll get us killed!
Minh (about Bobby): This talent is a party trick to nowhere! But it's cute that you think your boy will be successful someday.
Bobby: What's a meat examination team?
Hank: (very excited): It's like a debate team, only instead of doing something useless you get to grade the cut and quality of meat!
(Last lines of the series)
Bobby: Well, Dad, it looks like this is the last one.
Hank: Oh, you're just getting started, Bobby. You'll be grilling your whole life.
Bobby: Just like you.
Texas A&F is a parody of real-life Texas A&M University, based in College Station.
Title: An allusion to the 1959 novel To Sir, with Love made into a film of the same name in 1967 starring Sidney Poitier. Poitier's teacher character eventually realizes that his efforts to mold his impossible students may have at least partly succeeded after all. Yep!