How about this for the ultimate technique. You don't need to do anything, and you don't need any tools at all, not even your hands! Just a little imagination and focus is all it takes. Not that it's particularly easy to do. There are a few tricks that seem to help, including: keeping a strong mental image of something arousing, focusing intently on feelings of arousal, breathing control, and already being fairly horny to begin with. Everyone works differently, though, so something that helps one person may distract someone else. Even under the best of conditions it's not easy, but it is definitely doable.