Excrebitionist

Someone who shits with the door open or unlocked when there is a strong likelihood or intent they will be seen shitting

I hate going over to Tom's apartment. Every time I go in, I try to cover my eyes so I won't see him crapping. He's a total excrebitionist.

Assvalanche

Prolific and violent diarrhea.

I shouldn't have eaten those three month old baked beans. I'm not sure your toilet can handle the incoming assvalanche