I don't think this deserves to be in the Portal History 2005 collection, as it does NOT stand the test of time. Maybe in 2005 an animation like this was considered funny, but in 2013, it just comes off as the writing of a hack. I can't really imagine the art style looking good even for 2005 - I know comedy flashes don't require top-level art, but this is some of the ugliest artwork I've ever seen. It just doesn't really work on any level.
I looked on your profile and I saw the thumbnails for your 2012 submissions, and it looks like you've improved in your art, which is awesome. If you've got funnier since 2005, that's awesome too. But as for this animation, this is just pure "meh".
I really want to address some of the better parts of the animation, but IMO, there aren't any, really. When your writing amounts to "and what's the dead with toilets, guys? LOL", chances are there won't be any positive factors. If I can get the time I'll check out your newer stuff to see if it's better.

This is fucking amazing. Especially for 2005, a time when Flash animations generally looked messy and had awkward animation. This is totally fluid and looks great. The human models actually move like humans do. If it wasn't for the fact that I was viewing this on Newgrounds I wouldn't have even known it was made in Flash. Cool shit.

Everything comes together well in this. The chords, melody, the way you played some parts more softly, the mood, all of it works for the intro to an RPG.
I don't really like the reverb sound on it, though. It's kind of slathered all over the piece, which can be a little painful to hear, especially at the start. Something a bit more subtle would fit the piece more, IMO. Otherwise, solid composition!

It's good! It starts off with a fairly simple idea and develops it well. The only real thing that felt wrong was the lack of bass frequencies. I mean, considering the mood of the piece that was probably intentional, but a nice double bass would fit in really well. Honestly though it felt like it would fit right in in an RPG.