About fifty years ago, my boyfriend and I went to a midnight showing of Dumbo and a subtitled Japanese film called Atragon about some sort of monster machine. It was very boring indeed. We left part way through. Funnily enough, I saw Atragon promoted on Prime Video very recently!
I took my eight year old and three mates to see Muppet Treasure Island when it came out in 1996. It was so incredibly boring I nearly cried.
I went to see Burt Reynolds in Deliverance with the same boyfriend. It was so horrible I walked out and, of course, my boyfriend had to join me. Reader, I married him. 😂