I remember in Revenge of the Sith, when the actor playing Vader yells "nooooooooo", at what is supposed to be the emotional climax of the trilogy, the theater roared in laughter.
I saw I am legend I cinemas with my brother I would have been 16 him 11.
When Will Smith killed his dog my brother started balling his eyes out and I started laughing at him uncontrollably. I'm sure from an outside perspective I looked like a psycho