Public laundry rooms or -mats are the worst.
When I was in college, our apartment complex had a number of large laundry rooms (20+ of each machine). Somehow, people still managed to fill up every machine for hours.
One time I went in and all the washers were full and many of them were done. I waited 5 minutes (I timed it on my watch), then emptied three washers that I needed. A few minutes later a couple walks in and become visibly upset. They gather their three loads that I took out and emptied SEVEN other washers while I was there.
I finished loading my wash and walked out. A few minutes later I see them walk out to their car, load all of their wet clothes and drive in the general direction of another laundry room.
My Spidie Sense tingled, so I walked back in and, sure enough, they had opened the lids to my washers.
A-holes.
MotionMan