These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Dork Age: The general consensus of the Fuentes/Fugelsang era, though some purists who prefer the original Saget era would argue that the show is still in a dork age.
Dude, Not Funny!: Everytime the joke in a video is an elderly person falling or getting hurt, or a child.
Rather grating to see a toddler run over their infant sibling, then have the audience laugh uproariously.
Heck you could say any time a video shows anyone getting hurt, which is most of the time.
One show had a musical montage of angry/crying small kids angrily shoving other small kids over, usually causing the other kids to cry. It was a bit jarring to hear the studio audience laughing at the clips.
There was one clip where a kid was crying because he had diarrhea, while the mom was just filming and laughing; only the dog was being nice to the poor kid. The worst part? This won the $10,000 prize.
Another video of a kid who accidentally took a restaurant's reusable cup home in the car and his mother was recording him and telling him she's going to report him to the cops or something similar and, surprise surprise, it won at the end of the episode it was shown in. The voters on this show really need to learn that it's America's Funniest Home Videos, not America's Cruelest Home Videos.
The clips with people vomiting are just cruel; the person is sick and they are being recorded and humiliated on TV while the audience just laughs.
And another clip where a kid's parents give him a small cake for getting good grades, only for them to reveal it's actually a toilet paper roll covered in frosting. The child understandably cries his eyes out while his parents act like jerks, all while the audience is laughing.
To add insult to injury, all of the rights to these clips are owned by Vin Di Bona Productions, meaning that they can and do get reused in new episodes. Combine that with reruns and second-run syndication, and it becomes a textbook example of Never Live It Down for the people involved. Not funny, indeed.
Don't worry; the parents of Toilet Paper Roll Cake Kid got mercilessly mocked when the clip aired on truTV's World's Dumbest a few years later. One commenter (Billy Kimball, IIRC) even said, "Yeah, how dare you get good grades, you nerd," in a voice dripping with sarcasm.
A small comfort may be that the show has a policy against showing videos where anybody was seriously injured, which most likely means permanent injury, considering the myriad of obviously painful blows to the crotch.
Nausea Fuel: The Bergeron-era segments "The Naughty Files" and "A Moment of Ewwwww!" specifically showcase grosser clips than the producers were allowed to show before. Snot and vomit gags (usually via babies) have popped up elsewhere as well.
One $10,000 winner featured a decapitated fish head on a plate in a sushi restaurant. It was still moving.
Replacement Scrappy and Seasonal Rot: The Fuentes/Fugelsang era is often considered the show's nadir, and rarely sees reruns. On the other hand, the Bergeron era is often considered at least as good as, if not better than, the original Saget episodes.
You can also apply this to dogs. A lot of this is likely because the studio audience has the final vote, and it's usually filled with either grandparents or young parents. The parents are more likely to find cute videos funny.