But some of them are, and some of them work in publishing. From The Independent (“Author’s nude drawings too hot for US publisher,” by Tony Paterson):
One of Germany’s best-selling children’s authors is embroiled in an extraordinary transatlantic row about nudity after a US publisher refused to accept one of her books because it contained naive sketches of an art gallery with works depicting naked bodies.
The Comics Reporter (“American Publisher Passes on German Kids’ Book and Its Cartoon Nudity“) reproduces one of the offending images. (Thanks, Bookslut!)
As the father of two young boys, I can report that young boys are extremely interested in penises. We can tell them that penises do not, in fact, exist, but they do have the means of proving us wrong.