Is my sense of humor dead or has the movie become obsolete??

Rating: 5/10 (2 March 2015)

I know it is very surprising that I watched this movie in 2015. I have watched very few movies from the 80s or earlier as I'm only 19. I am a HUGE FAN of comedies and have watched almost all good comedies since 90s. I broke my so called "boundary" (movies before 90s) to watch this movie as it has so many positive reviews and is regarded as one of the funniest movies of all times.
However, my opinion was completely different. I only laughed once or twice during the movie and the story seemed haphazard. I know this is a movie from the 80s but the special effects also looked too artificial to me.
I don't really know why I didn't find it funny maybe I have watched too many comedy movies and this has caused my "humor level" to go down a notch.
If I remove my memories of all those comedies I have watched maybe I will find it very funny or maybe this movie is not funny anymore to my generation.