Lady Stefanie does not have time for verbose people and this guy was one. She had told him repeatedly that he needed to change that about himself and he agreed with her but he never changed it. She got to a point where she had to punish him and she felt that her pee was the best thing to use to punish him and she ensured that she used that.
Lady Stefanie has a crazy mind and she finds herself doing crazy things all the time. Today she had a loser and her mind wondered on what she could do to him. The mistress thought for a minute and decided to experiment with pee using him. So she took a piss and she mixed it with all manner of things and she got him to drink it. He drank it before it was mixed and after it was mixed.
Lady Stefanie took a piss in a glass and she used it to entice this guy. He did not see her do it and he was not prepared for what she was about to do to him. She used her naughtiness and her flirting to turn him on and then have him drink what she had in the glass. She had mixed a little bit of alcohol to mask the drink. The smitten guy took it.