"nipple and clit pumping": Sexual Health Community ...
Okay, based on what FCL and 40something said, I see no way that pumping of the nipples and clit could cause cancer of any sort. As far as the orgasm goes, I don't have any problems reaching orgasm and I don't go to such extreme measures as nipple and clit pumping. As a matter of fact, nipple and clit pumping sounds downright painful to me!