Ebbie - my take on that would have much more to do with Western *cultural* taboo of (feminine) genital swear words, than gender based equivalent taboos.

As a *very* amateur assessment I'd suggest that female sexuality and sexual parts have been historically repressed and treated as being more 'sensitive' than male. I suspect that could have much to do with the de-sexualisation (aka: dis-empowering?!) of women culturally and historically: In African story & myth for example female genitalia & sexuality is treated more err 'creatively'

This perversely or ironically rendering those taboo words referencing female sexuality or sexual organs more *potent* than male ones!