I wouldn’t want to live with either one of youse.
mmm
The OP needs to e-mail Dr. Sheldon Cooper and get a copy of his roommate agreement. I’m sure this exact situation is covered in detail. And I mean exact.
Can’t the two of you just screech at each other until Mom comes down to tell you both to clean it up? Then go to your rooms.
It’s a trick question. The roommate who should clean it up is the same roommate who cleans everything up – the one with the lowest tolerance for filth.
(At least that’s how it seemed to work when I had roommates.)
Proper LOL. You brightened up my day with that. Thank you. 
Oh wow. Now that is something right there.
I need to become a member just so I can have “glutton for funishment” as my custom title.
So your roommate’s bowl falls and breaks and nobody but you was in the room? Did it make a sound? The bowl couldn’t take it anymore and decided to end it all?
If you then sweep it up and throw it away he might, rightly, wonder what the hell is going on with you and his stuff.
Leave it there until the damned poltergeist cleans it up.