i wonder why the guy was angry...

I likey this very much!

I woulda asked myself, "What the hell did i eat?!!!"
Cool movie, gross idea

The concept was generally a little bit disgusting but you make me laugh and thank you about it.

That's a funny idea you had there! It's short, but that's OK, it kind of fits the style by being short.

Graphics - 10 - I loved the graphics. Characters looked funny, especially the part where he checks the toilet after he took a dump =P Good backgrounds too, but it's a bit disappointing that you just copied and flipped the first one to make the second one. Maybe you could've made it more "personal" to the second character.
Style - 10 - Very cute style! I thought it was cool how they hop on the pot and pull the chain.
Sound - 9 - Music fits well, and sound FX aren't really necessary even though they'd add something to the movie.
Violence - 5 - No violence, but who needs violence in this kind of cartoons...
Interactivity - 7 - Maybe there were easter eggs - I dunno. I didn't search either. But the little buttons you added were handy and well done.
Humor - 9 - Well, it WAS funny, so... yeah. The whole concept is funny, actually: vortexes in toilets? Hmm...

Summary: Good job, I'd say! I loved the style (both of the graphics and the animation) and the music added some weird touch to the whole thing. Nice!

Judgment: 5/5 and 10/10