I can't remember the worst movie I've seen at home. I've seen so many lol. The worst theater movie had to be the one missed call remake. I watched the original Japanese film later and realized the missed important plot points that were vital to the story. Also it was neutered from a R rated Takashi Miike film to a boring pg-13 horror film. On the bright side it introduced me to Takashi Miike and I've been a fan ever since.

Jeepers creepers :Reborn 2022 !!!!!!!!!!!!!!

I don't watch very many movies and this might be a controversial answer but the Hunger Games (at least the first movie, I've only seen the first one). It actually took me a whole month to watch it because the first time I tried to watch it, I fell asleep about 5 minutes in and I had to build up the mental fortitude to actually finish watching it. And it took me a total of three sittings to watch because I didn't have any connection to the story or the characters at all. I think I also remember the second half of the movie being actually good (not great, just good) but nothing really notable happens in the first half.

I think if they gave less time to the back story of the characters and focused more on the hunger games portion, it might have been fine.

I couldn’t make past 20 minutes of Cats. It’s just so bad and weird it makes me uncomfortable watching it.

https://www.imdb.com/title/tt0467149/?ref_=ext_shr_lnk

I love terrible movies and have seen all sorts, but for my money the absolute worst I have seen is Boggy Creek II: And the Legend Continues. Absolutely nothing happens for the entire duration of the film until the last 5 minutes. The DVD I had claimed there was a "terrifying incident at the public lake", but it's just someone falling off a jetski and getting back on it.

THE STEWARDESSES in 3D was the first film I ever walked out of.

Pixels

Sharktopus, bad in a fun kind of way though

https://en.wikipedia.org/wiki/Donkey_Punch_%282008_film%29?wprov=sfla1

Battlefield Earth.

I can't remember the worst movie I've seen at home. I've seen so many lol. The worst theater movie had to be the one missed call remake. I watched the original Japanese film later and realized the missed important plot points that were vital to the story. Also it was neutered from a R rated Takashi Miike film to a boring pg-13 horror film. On the bright side it introduced me to Takashi Miike and I've been a fan ever since.

Premonition starring Sandra Bullock

Justice League

Tough question. But i think it's "in fabric". It's just weird stuff happening.

The Thanksgiving Movie (2020) - https://m.imdb.com/title/tt13161792/

We wanted something to entertain the kids while we got everything set up for dinner, and we find this. The kids seemed to enjoy it, but they're not the most reliable movie critics.

Rubber... I mean it's so bad it's good.

This is an unconventional answer but stick with me:

The Bruce Willis Death Wish remake.

Movies are well known to have a so-bad-it’s-good factor. Aside from watching something made with passion fail, sometimes a failing movie can be mildly elevated by having an interesting choice or concept. Maybe a single actor who is really giving a go and creates a memorable scene.

Death Wish has none of that. It is a flatline of a movie. Nothing is ever done with passion, nor is it ever entertainingly incompetently. The entire movie is nothing but bare minimum technical competence. There are no bizarre plot twists, no unique action, no nothing. It simply exists.

Primo Baby

The Snowman.

Virus Shark (https://www.youtube.com/watch?v=u-aTRpXAP8A) (https://www.imdb.com/title/tt13785940/)

This movie is really really awful. ALL of the actors and actresses are so bad, it's not even good ironically. Just awful. I really don't mind B-Movies with a limited budget, as there are some out there, which are not bad. But this one in particular? The (badly made) rubber shark is a more convincing actor than any of the other protagonists of the movie. This movie is acted out so poorly that any movie you can watch on Sci-Fi are Hollywood quality in comparison. I dare you to watch the whole movie!

Oscar (1991)

My wife and I walked out on that one. I can't understand how it got a 6.5 on IMDB.