The Secret Origin of Denzel Crocker - S3-E8
Continuity mistake: Just where did the happy face (that appeared when Timmy said he needed to blend in to the 70s) on Timmy's shirt go during the rest of the 70s time?
Continuity mistake: In the episode Miss Dimmesdale, in the scene where Vicky has Timmy pinned to a board in the garage. The next scene shows Adam West pulling Timmy in with a claw, notice that there is nothing in the garage but in the next shot a bunch of tools appear.
Chin Up! / Dog's Day Afternoon! - S1-E5
Continuity mistake: This mistake is found in the episode where Timmy wishes himself into the Crimson Chin's comic book after causing the Crimson Chin to become depressed. After defeating the Bronze Kneecap, the Crimson Chin are walking, and the Crimson Chin has no cape. When they appear before a large American flag, the Crimson Chin suddenly has a long, flowing, red cape flapping in the win. When they walk into the "letters to the editor" page, the Crimson Chin no longer has a cape.
Continuity mistake: In the season 3 special "Fairy Idol", Norm looks at various newspaper clipping about how bad Bucky McBadBat is. One of them says "Worse Baseball Player Ever" when it should really be "Worst", and when Norm hands the paper to Chester later, it suddenly does say "Worst".
Engine Blocked / Mighty Mom and Dyno Dad Meet the Crimson Chin - S3-E5
Continuity mistake: At the beginning of Mighty Mom and Dyno Dad Meet the Crimson Chin, the Crimson Chin has defeated his foes and the bodies are laying everywhere in front of him. In the very next shot when he is talking to Timmy, all the foe's bodies have disappeared.
The Big Scoop / Pipe Down - S3-E10
Continuity mistake: The kid on the bus with the boil has his boil on his left cheek, but when he was with Waxelplax, it was on his right cheek.
The Big Superhero Wish - S4-E3
Continuity mistake: I don't remember if it's this episode or not... When Timmy opens his locker and finds a stack of papers, and they fall on him, they multiply to fill the whole hallway.
Continuity mistake: When Timmy first finds the place in the license plate maker where you stick letters in, there were 7 slots, but later when we see him spelling "I wish I was ten", there are 12 slots, enough to fill in that sentence, without the spaces.
Sleep Over And Over / Mother Nature - S3-E6
Continuity mistake: We know one hail van crashed through the 'Welcome to Brightburg' sign, but when the earthquake is sent to Brightburg, the sign's back to normal, no hole in it.
Totally Spaced Out / The Switch Glitch - S2-E8
Continuity mistake: When Timmy seals himself in his closet, he boards up the door, but the nails and holes don't match places.
The Big Scoop / Pipe Down - S3-E10
Continuity mistake: Chester is on the tree branch and we hear Timmy say, "This is a list of stuff I'll need for the party tonight." Then there is one poof, and Timmy's room is filled with stuff. In A Wish Too Far, Timmy says the thing about the list of stuff, and then he says the things on the list out loud one at a time, and each time Cosmo and Wanda poof in stuff.
Super Bike / A Mile in My Shoes - S2-E6
Continuity mistake: After dad takes off the cloth (or something) covering the homemade bike, one rusty pipe handlebar handle snaps off. A shot somewhere after that has the handlebar ends switched.
Crime Wave / Odd Ball - S3-E11
Continuity mistake: In 'Crime Wave', the bathroom door handle is on the wrong side after Dad puts the door back together. Also, the pieces put together don't match the ones that were broken out.
Odd Jobs / Movie Magic - S3-E2
Continuity mistake: In the episode "Odd Jobs", when Timmy's dad is a racecar driver he nears the finish line, his car explodes, and he goes flying, landing within inches of the finish line. However, at the next shot of the cars driving across the finish line, Timmy's dad is now lying a number of feet away.
Where's Wanda? / Imaginary Gary - S3-E12
Continuity mistake: Gary does a sliding trick with the apple, eats it, and throws it as if Timmy were beside him, yet at the next shot, only Mom and Dad are there, not Timmy. Also, Timmy is farther away from Gary.
Vicy Loses Her Icky / Pixies Inc. - S4-E4
Continuity mistake: When Ms. Waxelplax tries Timmy's homemade golf course, her ball hits a windmill, knocking it loose. The windmill flies forward like a propeller but on the next cut, flies sideways.
The Big Superhero Wish - S4-E3
Continuity mistake: Probably around the time when Elmer (kid with boil) the normal kid bends the Baby Shredder (Vicky's) claws, the boil jumps from one cheek to the other, and Elmer's making it do that.
Totally Spaced Out / The Switch Glitch - S2-E8
Continuity mistake: After Timmy encounters Wanda the etch-a-sketch bat (and current godparent of Little Vicky) and before he goes out of the closet, the boards, nails and holes disappear.
Engine Blocked / Mighty Mom and Dyno Dad Meet the Crimson Chin - S3-E5
Continuity mistake: In "Mighty Mom and Dyno Dad Meet the Crimson Chin" Cosmo states that the Crimson Chin comic book has been around since the 1920's, yet when all the Crimson Chins come to help there is no 20's Chin, it starts at the 30's.
Vicy Loses Her Icky / Pixies Inc. - S4-E4
Continuity mistake: When HP does his ball for hole 1, it flies up, and falls diagonally, but at the next shot, it falls vertically.
Answer: It's a joke. One cannot list all forms of entertainment. The list would never end. The boys were trying to convey how superior they were to the others, by saying that they were too good for comedy.