I learned this from my girlfriend a few years ago when we were away for a shopping weekend.
We were talking about sex one night and I admitted I could masturbate myself to many orgasms with fingers but a vibe always gets me off faster. She took me for a walk to the drug store and bought four disposable vibrating toothbrushes and a bag of rubber bands. Back at the room she put two brushes together back to back with the bristles facing outward then bound them together tightly with two of the rubber bands. She told me to get naked while at the same time taking off her own clothes. She told me to click on both of the brushes and put my clit between the heads. It was one of the most intense vibrators I have ever tried. It got me off in less than a minute and I did it over and over again until I was satisfied. She just watched for a while then did the same with her own. She too had some pretty incredible orgasms that night.
Now I always keep one of the little inventions in my night stand but only use it now and then. I find the vibrations almost too much sometimes but other times it so good and I can get off so many times and fast. Go ahead and try it. It only costs about 12 dollars, batteries are included and nobody knows what you're buying it for. It's been a few weeks. I think I'll try mine right now for a change. Happy orgasms ladies.