Subject: White, Male, 28
The subject is infected with vampirism. He has locked himself in his room in the dorm, or hotel where he is boarding, so he will not succumb to his nighttime bloodlust. Eventually, however, he really, really has to urinate, and leaves his room to go down the hall to the restroom, afraid he'll run into someone on the way, and suck him or her dry.
In the restroom (which is filthy), the urinal has a built-in paper towel dispenser, and is hung too high on the wall, or maybe the subject is just peeing in the paper towel dispenser.
There are other people in the restroom.
The subject has to stand on tip-toe to keep his wang in the urinal. He also has to keep it pointing upwards -- not like that -- so it won't rest on the steel, in the pee. The subject gets some pee on his hand.
The subject starts to get kind of dizzy, like he is drunk. This is the bloodlust! It feels just like being drunk in a bar, and peeing. The subject fights to stay in control of his senses, lest he drain one of these people -- like maybe the guy who remarks that the subject sure is peeing a lot. There is no sign that his bladder is yet near empty. The subject's canines start to grow out. The subject knows the bloodlust is fully upon him, and so is some pee.
The subject returns to his room to do some push-ups. By now there are people in his room, too, one of whom is some kind of physical trainer or something, because he keeps telling the subject he's doing them wrong, and is going to strain his back.
Now the subject is back in the mens room, peeing. It's a torrent. Will it ever stop? Yo, the subject doesn't know. The subject keeps peeing, and peeing, and peeing, and peeing, though the pressure on his bladder does not lessen.
The subject awakens having to pee.