Based on the name and this situation, I assume a piss disk is when you pee into a shallow saucer, freeze it and then slide the frozen disk under a door so that it melts later and forms a pool of urine in someone's apartment.
Madness string 112329
What people have to realize first is they're not just one single person who does weird, out-of-character things now and then. We're all made up of many different selves who fight and compete with one another constantly. Somehow we've got to get them to agree on a few basic things. Get them to stop fighting with one another. They all have different needs. One part of us wants safety, but another wants adventure. I want to be loved. I want to be left alone... Those aren't contradictions - they're independent selves saying 'I want this!'