Two bronze naked mannequins "Two Peeing Guys" made by David Cerny at Kafka Museum courtyard.
They move at their hips stand in a pool shaped like Czech Republic writing quotes by famous Prague residents in the water with their pee.
The statue accepts SMS messages at a number written next to the statue.
The two pissing men will then spell in the water whatever message is sent them later resuming their normal operation.
This piece generates great hilarity among the tourist that pass by it.