Rosarosebud returns to find their sub in the bath as instructed. 
Rosa is in tights and going to use him as a piss whore.
The enamel of the bathtub has the sub cold, but very soon he will be warmed up.
Rosa climbs above and takes a long piss through the pantyhose and onto his cock.
After pissing through the pantyhose, Rosa removes them, rings out excess piss onto him, and then binds his hands to leave him for later.