Pussy pumps are used to swell the vulva with blood as well as increasing the sensitivity of the vaginal lips. Pussy pumping is getting more and more popular over the years, so it's not simply a trend. Some men also love to see their wife?s vagina all bulge up. You have to pump the vagina and keep it pump for a little while (15 minuets or so) for it to work. Like with penis pumping, use caution or permanent damage might occur. Some pussy pumps are too big for most women, this is why we carry a few. Read the other costumers comments.