I'm looking for a film /wsr/

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Pretty sure it was made in the 00's, it's a comedy movie similar to American pie about two friends throwing a house party in the suburbs while the parents are away. I think.
Very early one one of them gets a blowjob from a girl and comes on the couch.

And there's was some bleached blonde guy who is constantly mistaken for a corpse, so they have him stuffed in closets and whatnot, hiding the body. There's a different guy who's stuck on the toilet having an epic diarrhea and his stomach is talking to him regularly.
Somewhere around the middle of the movie they discover the parents are coming back and try to clean the epic party up maybe? I think they are successful but my memory is pretty spotty and hazy. Oh and the blonde dude eventually wakes up.
I know it's not a lot to go on, but I had to ask, since it was a funny movie and I've been trying to find it for ages.