I live in accommodation with communal laundry. There are only 4 dryers and 5 washers for hundreds of flats (not sure exactly how many but I live at 396).
Tonight, three dryers were sat idle for >30mins. So I snapped and pulled some laundry out and put it on the surface nearby, then loaded my wet stuff up.
I came back to find this charming note taped to it: imgur.com/xmyWg5F
Who is BU?