I've never been to an orgy before. What do I wear?

Psycho Beach Party (2000)

Chosen by me as part of my theme 'week'

Whedon actors in horror comedies week continues with this effort, a movie I had wanted to watch when it came out but only got around to now.
I can't imagine how this film plays if you're not aware of the Beach Party movie cycle (I've seen a couple and they were kinda cool in a very square trying to be hip way) it plays to the tropes quite strongly and the acting may seem stilted if you didn't know what they were going for.
Still it's a mostly fun movie with an interesting cast but can't quite maintain it's momentum and becomes a little tiresome at the end.