Boomhauer does not have any lines in this episode. This is the first time one of the main characters do not speak.
When Dale walks in after Bobby spins the bottle, it shows a boy and a girl next to each other closest to the door. However when the bottle stops there are now two girls there.
There are two things wrong with the scene where Luanne has her test. First, there is no way that the lady could draw on Hanks hair like that. Secondly the marks on Hank's head (that he draws) disappear.
Peggy goes out to the living room to talk to Bobby after speaking with Hank. Luanne then comes into the Kitchen through the back door and Peggy is suddenly right next to her.
This episode starts the KOTH tradition of changing the theme song slightly for the season finale. In this season the guitar sound at the very beginning of the opening credits is one octave higher, and has a distorted sound.
Bobby and Connie share their first kiss in this episode.
The name of the news paper Hank is reading at the dinner table is the Arlen Courier.
After Hank locks the head in the cupboard, the brass keyhole disappears.
When Bobby is shown drinking the grape soda we actually see an Alamo Beer can in his hand.
When Luanne enters the room with the head, she is wearing a pink shirt and blue pants, but when Bobby is staring at the head, she is wearing a green shirt and red pants.
In the scene where Luanne is told she can use the new recruits for practice, Dale's hair is grey in one frame. It happens right after Hank says "I overslept".
Hank: Hey, Dale, Bill, Boomhauer.
Dale: Don't you "Hey, Dale, Bill, Boomhauer" us! You said noon; it's 12:15.
Bill: Do you have any idea how long we've been waiting?
Peggy: I realize I am just as much to blame for your condition as the media and the Devil.
Bill: You know, I feel for that kid. I remember when I was starting out as a young barber. I felt so alone -
Dale: (interrupting) Nobody cares, Bill
Hank: Luanne's right, all you need is practice. You think Jeff Foxworthy just woke up one morning and took some funny pills?
Hank: Hey there, Bobby. I guess they found a cure for the cooties (chuckles)
Bobby: I dunno, what are cooties?
Hank: Well, when I was a boy, that's what they called the germs you got from girls.
Bobby: Oh, you mean like Chlamydia?
Luanne: Beauty is an art. It's not something you can learn in school, like gym or study hall.
Hank: You're usin' this head like a crutch!
Bobby: It's not a crutch, Dad. It's just something I've come to rely on to get me through life.
(Hank is sorting through the mail)
Hank: Bills, bills, bills... Why do we keep getting Bill's mail?
Hank: Bobby, I'm as open-minded as the next guy, but just so you know, most states won't let you marry a plastic head.
Hank:(to Peggy about Bobby's behavior) Don't point your finger at me, woman! You're the one who parks him in front of the TV and makes him watch all them Muppets! They got frogs kissin' pigs ... what the hell did they think was gonna happen?
The song playing in John Redcorn's car is "Rock Me" by Great White. The song playing during the montage is "Wouldn't It Be Nice?" by the Beach Boys.
Bobby's lunchbox had "Mrs. Doubtfire" on it. Mrs. Doutbfire is a 1993 Robin Williams movie.
Hank: Jeff Foxworthy didn't wake up funny.
Jeff Foxworthy is a stand-up comic
The actor Hank refers to, Ricardo Montalbán, is best known for often playing a "Latin lover" and for his role on Fantasy Island.
Hank: They have frogs kissing pigs.
Hank says this referring to the Muppets. The "frog" is Kermit and the "pig" would be Miss Piggy.
Bobby: Should we go to red alert?
Joseph: Make it so.
Joseph: Arm the photon torpedoes!
Photon torpedoes are a weapon that was frequently used on Star Trek. "Make it so," was a catchphrase for Star Trek: The Next Generation's Captain Jean-Luc Picard.
The episode title is a reference to the movie Single White Female.