seen in amsterdam iii

Everyone knows that prostitutes in Amsterdam stand behind large windows, displaying their wares to passersby. And perhaps you also knew that they have little red lights outside their doors indicating their trade. But did you know (i) that they (at least the ones near me) are on average quite fat and ugly? and (ii) when a single male walks by they will knock on their windows to attract his attention? (ii) is extremely annoying, though it would perhaps be less so if it weren't for (i).