The guy told me the bench quickly got a nickname Hovnivál, which is a Czech word for Copris lunaris, a beetle that is fond of excrements.
A bunch of young artists cleaned a park at Milady Horákové st. and made a brand new bench for it, looking just like a big dog excrement. I love it. I would love it even more, if it wouldn’t be surrounded with real dog excrements.
More information (in Czech).