That's how, to this day, I have anxiety performing CPR, even for certification (which is done on a dummy) and pull out the industrial grade draino whenever a drain is even suspected of being clogged.
Watching The Thing and The Blob before you're 10, not the best for your mental health.
If Draino works for you, great. But in case anyone is reading this and has an experience like mine where Draino never seems to fix clogs for long, especially in showers/bathtubs: try Green Gobbler. It's non-caustic, so easier on your pipes, and it breaks down clogs using enzymes to break up organic material. In my experience it's much more effective than Draino.
I think someone in the earlier movies loses their wedding ring down the drain and reaches in to grab it and is relieved of their forearm in a rather gruesome scene. It was like the 2 seconds I saw of the movie as a kid and it instilled a healthy fear of garbage disposals every since.
I've never even seen those movies, but replacing the garbage disposal with a normal P-trap was one of the first things I did when I bought my house. I'm not even particularly scared of them; I just think they're kinda gross.