The Happening! That's exactly the movie I was trying to describe to my wife; "you know, that movie that when the wind blows people kill themselves."
I made it about just as long as you before bailing but she watched it all. I asked her about the end and got;
Yeah, 100 years ago I knew a guy with an already-been-fired M72. It was fun to pull the tube out and watch the sights pop up and then pretend to fire at some commies.
We have to break the parties up too. Just "us" this morning, then "immediate family" (siblings, mother in laws), then the "cousins party" which happened last Saturday.