I'd say it has a good deal to do with the intensification of the sexual stimulation and the HOLY FUCKING YES sensation that accompanies the orgasmic bliss of mutli-sensory stimulus.

I admittedly crave this sensation and have been known to masterbate my ass and cunt at the same time. I like to use a either a plug or dildo up my ass, a dildo or vibrated in my cunt and a sweet vibrating egg or bullet on my clit. When I cum - it is the most satisfying bit of self-ecstasy. ~whew~

I suppose the taboo-factor works in there when you add a partner to the mix. I personally think it easier to take it up the ass in the prone on all fours standard postion, but confess that I'm growning much fonder of the on-my-back-legs-raised-high-take-it-in-deep while he or I diddle my clittle and shazam! Heaven!

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