Beau is Afraid was the last one I recall. I think it was mostly the latter half of the movie where I started to get a bit confused and needed the ending explained to me.
What movies made you look up some kind of explanation afterwards? I feel like I have done it several times in the past for more surreal movies but can’t think of any other examples.
It can also be a TV show.
Memento is the most extreme cases of this I’ve ever experienced. A week later, I was still walking around with a notebook, slide rule, and french curve trying to work out what the hell actually happened in that bitch.
Have you tried watching it while on drugs