Is that what it takes for you? A girl with a full bladder releasing it into a toilet is what gets you off? On the one hand it's sad that you are so pathetic. On the other hand Cadence loves that she can profit from just going to the toilet. It really is that easy with piss slaves, they will pay to stroke to the sound of a girl tinkling into the toilet.
Your cock sure is tiny, how can you possibly expect to satisfy a girl like Madame Rose? The truth is you can't, which is why she ridicules you and your tiny cock as you stroke and hope to cum. She does find demeaning you to be cute though, if that's any consolation to being a loser.