This may sound like advertising, but I think that all women should know about this stuff I found, called 'Orgasmix'. It's a slippery little gel that you rub on your clit to stimulate it. It's clean, doesn't taste bad, doesn't smell bad, and best of all, IT WORKS. (Seriously)
My friend got me a small sample tube of it, and since then I've used it all up and ordered more. The best way to use it, I've found, is to use your own juices first, get your clit damp and ready, and then apply a little bit near the top of the underside and then rub it all over, maybe using your other hand to hold back the skin a bit. You don't need to keep adding the gel either, a little bit of natural juices works just fine, and if it suits you a bit more of the gel. I'm sure that after you get the hang of it, you'll be addicted-I've only ever been able to get that intense of an orgasm before when my boyfriend eats me out. Now I can do it anytime :D Enjoy!