You really have to pee, like really, really bad. You can't hold it in anymore, but there is no toilet in this stall, but you don't want to make a mess in your underwear and pants or on the ground either. There is no Toilet here, but it looks like there are buttons on the wall and 5 weirdly shaped stones in the wall.
"OOOOOOOOH!" you say, you really, really need to go now so you hit the cow button. The middle stone opens up and a suction cup with a tube appears from the middle hole in the wall, it looks like one of those things you see on a milking machine.
"ARE YOU KIDDING ME!" You say. They really expect you to attach your penis to it and take a piss in it? Well, it looks like there are no other alternatives, so it seems that you have to.
You do so and you begin to urinate out the things in your bladder and penis. However, it is not yellow urine, instead it is thick, white, and creamy. You are scared, but you reluctantly take a drink from the bucket that the machine empties out of after you are done peeing. It is not disgusting like urine, or cum, but it is delicious cow milk.
"OH NO!" You say, it is cow milk. You just peed milk out of your human urinary system and reproductive system including your bladder, prostate, urethra and human penis. Your human urinary system and reproductive system organs like your bladder and prostate are now just giant mammary glands. This is so humiliating. But it does not end there.