My new urinal

I had just received a message from a slave here telling me that he was eager for me to use him as my personal urinal, and that he loved my stories. The first thing I did was force him to send me a photo, and when I checked that he had a certain appeal (he was just starting his quarantine, was 6 feet tall, and was thin) I forced him to send me his phone number and explained how things were going to be.

"I want you to tell me what hours you're always free, so I can use you at those times. I'll send you a message half an hour before I want to pee, and I'll have you meet me at public restrooms. When you arrive (you'd better be punctual, or I won't be pleased) you'll enter the stall I indicate, undress, and wait on your knees stuck to the toilet bowl with your mouth open. Is that clear, pig?"

"Yes, my master," he replied in a very low voice.

"I'll come in, pull out my cock, and you'll have to swallow all my urine without leaving a single drop. When I'm done, I'll leave, and you'll wait for 5 minutes without moving. After that time, you can get dressed and leave to wait for your next summons."

"Yes, my lord."