I think this is one of the funniest movies I've seen
Sometimes the difference between self-amusement and self-actualization is less than you think.

this movie was outright hilarious

It's subtle, and dark of course. It's mainly in the dialogue.

sand-wiches!

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Yeah, I consider myself a dark comedy fan, hell I love dark comedy. But I consider this a drama with dark humor. I mean, American Psycho, one of my favorite movies, is more of a dark comedy than this is, but IMDb doesn't even list AP as a comedy, so I don't understand why this is listed primarily as a comedy. I went into it expecting it to be a light comedy and really was thrown by the predominantly dramatic viewpoint it has.
Anyway, I really enjoyed The House Of Yes, so it worked out ok in the end, but If I had seen it was just a drama, the humour would've been a nice bonus, whereas it took me a little while to adjust to the overall tone.
Koalas are telepathic. Plus, they control the weather.

Just to play devil's advocate here, I know a few people (and I mean savvy movie buffs) who do consider this a drama with humor rather than a dark comedy. When McLeod wrote the play she certainly did not stick a genre label on it.
If is it a dark comedy, then it is a script that pokes fun at serious issues, like death, rape, illness, etc. If it is a comic drama ("dramedy") then it would take a serious look at these same issues but also include many laughs.
Given that, I think either viewpoint might be correct. I think it all depends on how one sees the ending. If it is inevitable and sad, then it is certainly a drama. If you see it as ironic, and wickedly funny, then it's a comedy.
I don't think anyone would be wrong it perceiving it either way.

I dont even see the dark comedy.

Stop giving me the third degree!

It's extremely funny, in a black and uncomfortable way. The style of comedy isn't going to be funny to everybody, though.
Ooo, baby, your domestic gross is SO BIG. That's how I know how GOOD you are!

I dont even see the dark comedy.

Its dark humor.
If it's too quiet you're too young.- Justin Norwood (me.)