I’ve been trying to figure out the name of the very first horror movie I ever watched (this was around probably 2004-2006). The main character was a dude who looked like Ben Stiller and he was a serial killer who had a blonde friend or girlfriend. All I remember is towards the end of the movie he sets up this house for a party of teenagers and has traps and stuff thought out like he cuts down this tree and leans it up against a window incase they tried to climb down it. I also remember this really weird sex scene in it where this girl is riding a dude. At the very end I remember the blonde girl puts the killers head in an apple crusher and crushes his head.