Humans have a long, rich history of destroying the private parts of great works of art. Famously, the statue of the fictional Irish folk-song character Molly Malone has had her ample bosom rubbed by tourists so often that her tits are now a completely different color from the rest of the statue. In that same proud tradition of the public’s immature fascination with the genitals on public art, The Guardian reports that a famous bull mosaic in Milan now needs its balls restored after years of tourists dancing on them for good luck. The mosaic with the faded testicles resides within the historic Galleria Vittorio Emanuele II, a massive 19th-century shopping area near Milan’s Duomo cathedral. The mosaic is simple enough: it depicts a bull that represents the city of Turin, as it proudly stands on its hind legs, exposing its substantial set of balls.…