There was this time we hid a carton of milk in these guys' dorm room, inside the heater. We picked the lock to get in, and the heater is covered, so they had no way of knowing.
After about 5 weeks, it got pretty ripe.
When it finally got bad enough, they took the cover off the thing and found it. There was quite a scene on the hall. They chucked the milk out behind the dorm, and it stunk up the whole area around the dorm for a couple of days. Rank.