Ah, the evergreen gay storyline: two men get into a relationship, but one can't deal with the other's cruisey compulsions.
I've seen this story dozens of times, but what stands out here is the way that Ripploh uses Myra Breckinridge-esque stag inserts to seemingly present these urban gay mainstays -- gloryholes, leather, stand-up sex -- as learned behaviors. I don't know much about German gay culture, but there's probably some truth to that idea -- that sex films, if just by being the only medium that allowed gay men to see themselves and their sexuality on the screen, shaped the progression of gay culture in the lead-up to the simultaneous outbreaks of AIDS and home video. Is he saying that's a bad thing, though?
I don't think I've ever seen a piss scene that long in any other 'arthouse' movie.