The USA are really weird in that regard. On the one hand very progressive, but in regards to everything sexual they (as a country/culture) are completely prudish. Why, though? They also like to fuck. Why are they so childish that they can't look at a nipple or even - god forbid - genitals? And, even worse, why can't they even talk/write about it? One of the central things or any living being, and they treat it like a disease that needs to be purged.