While not as dark as Invader Zim or as wildly gross and inappropriate for kids as the 90s Nicktoons like The Ren & Stimpy Show (and, to a lesser extent, Rocko's Modern Life), this show contains some blatant radar-slipping. Given it was created by Rob Renzetti, who worked on shows that are full of this, such as Dexter's Laboratory, The Powerpuff Girls, Time Squadnote , 2 Stupid Dogs, and eventually Gravity Falls, it is expected to be in this show as well.
- In "Attack of the 5 1/2 Ft. Geek", there's a member of the Lonely Hearts Club Gang who wears a broken noose around his neck. Given that all of them are depressed and angry for being dumped by their girlfriends, he probably tried to kill himself.
- In "The Great Unwashed", Tiff calls Jenny a "circuit jerk", which sounds extremely similar to the rather profane term "circle jerk".
- One of the recurring antagonists is a gang of alien biker chicks. Most of them are dressed like dominatrices, especially the leader Letta, who drags around a smaller, apparently male member of their species by a leash.
- "Ball and Chain" reveals that this is a custom with their species as husbands are to be treated like domestic slaves or house pets, which is what would've happened to Brad after he married Tammy. Also, as Tammy is an young adult trying to marriage the teenage Brad, implying that Tammy is an Ephebophile.
- "Hostile Makeover":
- During his explanation of puberty, Brad inexplicably shows Jenny a 1950s style showreel of children growing into adults. Little Billy grows up into a handsome man named William, while Little Sally's adult form - a scientist with an hourglass figure - is dubbed by Brad as "...uh, Big Sally."
- Embarrassed by robo-acne, Jenny puts a bag over her head and complains "it smells like fish tacos!".
- Brad watches Jenny's "robo-puberty"note transform various aspects of her body, making her more bulky and giving her excessive wires beneath her armpits. Most of his reactions are out of disgust or confusion ("Eugh! Wha?"), but when her chest suddenly bulges, he gives a suggestive, "Oooh..." When Jenny dashes away, Brad is left standing there muttering, "What's your hurry, Sally - I mean - Jenny?
- In "Grid Iron Glory", Jenny takes the spot on the football team that belonged to a Jerk Jock named Jacque. Jenny insults him by calling him both "Jacque strap" and "Jacque itch".
- In "Mind Over Matter", when Jenny has difficulty fighting an opponent:Jenny: No time, Mom! I'll just download some new upgrades from the Internet!
Nora: XJ-9, don't do that! You'll go blind! - What's the first thing Sheldon notices after stealing XJ-9's plans in "Designing Women"?Sheldon: Twin-manifold access ports? Ohhh, baby!
- In the same episode later on, when Vexus is disguised as Cutie-2, she claims she crashed into his house because her rockets gave out. We're then treated to a shot where she pulls up her mechanical skin of her leg to show off the damage, with Sheldon's eyes widening as a suggestive tune plays in the background.
- In "There's No Place Like Home School", Jenny is expelled and has to be home-schooled. At one point, Dr. Wakeman sets up a fake prom, and pairs Jenny up with XJ-8, her sister.
- "Escape from Cluster Prime":
- Ms. Wakemen takes off her coat. It cuts to a between-legs angle where we see Tuck and Brad looking away, but Sheldon's eyes wide open. Then it switches views to see that Wakeman is in her Skyway Patrol uniform.
- When the Cluster starts the second wave of its invasion, Brad watches in horror, and the camera pans down to his legs. Then Tuck drops down from behind him with a "glop" sound effect, to give the impression of Bowel-Breaking Bricks.
- In "Weapons of Mass Destruction", Jenny has to keep saving the world hidden from a guy she likes, and since she already used having to go to the bathroom as an excuse, she leaves a blow-up doll of herself in her chair. She comes back and lets the balloon blow off—and it zooms into Sheldon's desk, who closes it with a smile and questionable intent.
- The episode "The Price of Love" is about Sheldon wanting to make Jenny jealous by paying a girl to be his faux-girlfriend. But don't worry, as the original girl put it, there are stripulations, causing Sheldon to go, "Don't you mean stipulations?"
- The beginning of the episode "Good Old Sheldon" has Jenny just finishing telling Brad and Tuck how (she thinks) babies are made, leaving them with horrified expressions.
- In "Voyage to the Planet of the Bikers", the Space Bikers are revealed to have normal day jobs on their home world as staff and faculty in an elementary school. Tammy is a teacher shown standing in front of a blackboard with a diagram reading "birds + bees = babies". While pointing to this diagram she directs her students to turn to page 69 in their textbooks.
- In "Victim of Fashion", Tuck at one point directs an insult to the Space Bikers taken out from Aliens, with just one major word changed.Tuck: Get away from her you fish!
- Plus, the second-half of the episode where Jenny told Sheldon to remove all her accessories from her body to the point of appearing like a stick-figure is allegory to bulimia.
- The plot of the episode "Puppet Bride" is that one of Nora's earliest inventions, Lil' Acorn, has decided to coerce Dr. Wakeman to make him a bride, which he eventually settle for Jenny after first seeing her. Considering both Lil' Acorn and Jenny are both related as they're both the creations of Dr. Wakeman, implying that Lil' Acorn wants to engage in a incestuous relationship with his sister.
- In "Tuckered Out" where Tuck is going to film a documentary of Jenny, Sheldon is the light-tender, but he's also the one giving Jenny make-up. When told by Jenny she thought he was just taking care of the lights, he counts many other jobs he has in the project... and one of them is groupie, which he says as he lustfully looks at Jenny. The censor is dead.
- In "Indes-Tuck-Tible", one of the signs one of Tuck's fans is holding says "TUCK YEAH!". Go ahead and think about that for a few seconds.
