According to American TV networks that is.  An American tampon maker had its advertisement rejected by major television networks because it spoke the forbidden word, ie vagina.  Even when the company substituted "down there" for vagina, two of the networks still wouldn’t run the ad – so the company dropped the ad.

A spokeswoman for the advertising agency responsible for the ad said:

"The whole category has been very euphemistic, or paternalistic even, and we’re saying, enough with the euphemisms, and get over it. Tampon is not a dirty word, and neither is vagina."

but even better was the comment in The Sexist blog – just love this one:

"Now, the commercial contains no direct references to female genitalia – you know, the place where the fucking tampon goes."

Oddly enough, the same TV networks don’t seem to have a problem with about references to "erectile dysfunction" in prime-time ads for Viagra and Cialis, pointed out an executive for Kimberley-Clark, the tampon manufacturer.