I did throughly enjoy your story ,I do wonder if your Master feels you are worthy to suck his cock until he cums then washing it down as he emptys his bladder of his preciouse golden piss .
In my own case ,I love it when my Mistress lets me go down on her after she pisses ,she tells me it saves on toilet tissue ,,
The ultimate piss experience of course is when I serve her by swallowing her nector while kneeling in the bathtub ,
If I may be so bold as to suggest your Master piss into a water glass ,leave it for a couple of hours with instructions that you drink it