heh.. I think you would really have some issue getting up your little friend while on etiz.. especially if you take a high dose, but with a lowish dose it would be possible I guess.
I've managed to masturbate on DXM and even benzos and maybe even the two togheter (don't really remember) but:
-it was after the peak, I don't really see it possible during
-I had always smoked weed that tends to make me easily aroused