I THINK this is likely billed as a horror movie? But it's not. It's more "thriller with the 'wait for it' ending". It also has more comedy than a dopey teen horror flick, doesn't feature a virgin getting killed off, and the youngest person in the movie is 23. Pretty sure no one in this movie is a virgin, LOL . . . so no "the virgin gets it!" moment.
It does have some "Yelling at the characters to get out!" moments, but even that feeds in to the genre blurring, which is to say that this movie has WAY more genuinely funny moments than the typical horror (OK, maybe not as many as "Scream!").
Basically, the plot is "What would happen in the 'Big Chill' if some of the people reuniting are off the wall bat sh#t psycho?"
Merry happenings ensue including humans caught in animal traps, weird amounts of random dead dogs, racoon attacks, spades to the face, hurling into kitchen sinks, cockroach attacks, a shower that spouts blood, and a woman who asks what sort of red wines they have at a dive college bar.
If you love thrillers, horror or comedy . . . this is for you.