After knowing for a long time that Malcolm is good in his studies, Reese in cooking, and Dewey in music, we learn a new thing about Malcolm; he is also talented in dancing.
Nitpick: Lois wins a brand new truck in this episode, however, it is never seen again and the minivan is used like it always has been for the last few episodes.
Lois' handbag strap moves back and forth from her shoulder to her arm between shots when she and Hal are talking with their hands on the RV.
When Lois is consulting Malcolm on his romantic life, her hand shifts from the rear-view mirror to the front fender, and back to the mirror between shots.
This episode marks the second episode where Malcolm and Dewey suffer from sleep deprivation together in a storyline, the first was the season 3 finale "Monkey."
When Reese is telling Malcolm and Dewey that he's been spending his time in the library, the background was the closet with their clothes. But there a little girl's dress in it, too. Now why would they have a dress when there are no girls in their family?
Abe and Malik's exchange about Trey "giving up years of medical school to become a dentist" may be a reference to an episode of Seinfeld entitled "The Yada Yada," where a similar joke is told. Byran Cranston (who plays Hal) had a role in that episode as dentist Tim Whatley, who gets offended by a dentist joke told by Jerry Seinfeld.
The forms of revenge that Lois uses are:
1) Bubblegum in the hair, ensuring that the first girl would have her hair cut off.
2) The decapitated and mutilated heads of the second girl's dolls and stuffed animals stuffed in her locker.
3) At the third girl's house, Lois placed a pink duffel bag with condoms and hotel brochures inside her living room, then made a call to her parents, pretending to be calling about a hotel reservations for the romantic suite. And she accidentally framed the next door neighbor's son being a pervert while making her getaway.
4) After talking to Reese about what she had done, Reese wanted to continue the revenge, so they borrowed Hal's pitching machine and made a catapult with paint balloons.
Lois mentions at the end of the episode that she and Reese should go bowling sometime, which relates to the season 2 episode, "Bowling."
This is the episode where we find out that Lois has a "bully side" like Reese.
Why would two people being pelted with paint-filled balloons not take cover?
The map Malcolm draws a circle on is a map of Las Vegas turned upside down.
This episode continues the backstory of Francis having a drinking problem from "No Motorcycles."
It is revealed that Francis never had an alcohol addiction.
This is the first appearance of Emy Coligado (Piama) this season. Her last appearance was in "No Motorcycles."
Goof: Everybody said that they haven't met Hal's father yet, but they already met him on the episode "Family Reunion."
Lois and Malcolm become hooked on the Pizzazzler. This is the show version of the product Bedazzler, which actually does all the things Malcolm and Lois do with it and more.
Malcolm says that all those years of stepping on cracks has finally paid off with Lois getting sick. He says it's no broken back, but he'll take it. This is referring to the old nursery rhyme 'Step on a crack and you break your mother's back'.
Just like last time, Lois was sick for a good portion of an episode. (Season One's "Smunday," Lois lets her guard down and reveals things she never would normally allow her kids to know).