In the last edition of italian Vanity Fair, an article reports that play boy Porfirio Rubirosa had an huge one. One of his ex wives said he was 15 cm (6 in) in circumference, just like a baseball bat (end part). there are two possibilities: 1. Confusion between diameter and circumference, but: 6 inches DIAMETER???? 2. he wasn't that huge, i am 6.3 in circumference, and i am not even close to a baseball bat's end part.