Dangling Shoe

This sight scared my sister as she left the house:

This shoe was dangling from what looks like a sarong at the staircase. Can you imagine that this is the first thing you see when you open the door? What would you think?

This photo was taken from where I would stand if I opened the door. Those who step out of the lift would get a slightly different angle but it doesn't change the fact that it still looks freaky. Moreover it only appeared later tonight.

I don't know why anyone would do something like that.

Creative people out there can come up with a caption for this photo? Or perhaps conjure a reason why anyone would do something like that?