Why do I do this? Am I just lazy?

I'm a student, I live with 4 other people. Anyway, sometimes I just get lazy I pee in bottles and cups and leave them lying around in my draws, I also eat cheesecakes and stuff and leave the plates and litter in my top draw, often for months, I cleaned out my room and found an old Ben and Jerrys tub but it was half full of piss, I also found a 2 liter bottle of pee in my bottom draw which has been there for 3 months and it smelt rotten. What wrong with me?