Originally Posted by Ramallah

A few people mentioned kegels and those are good for strengthening your PC muscles but they won't help you stave off an orgasm. The reason they don't help with premature ejaculation is because the movement pulls your prostate gland closer to the penis, which increases the stimulation and thus will actually make you cum sooner. However, doing reverse kegels might help you with your problem. Instead of squeezing your muscles, you push out with them, as if you're trying to force out the stream of urine. This will move your prostate gland farther away from your penis. Try doing it while masturbating and you'll probably find that you can last much longer; some guys can last almost indefinitely.

Originally Posted by FngKestrel

Check out The Multi-Orgasmic Man. It covers the male Kegel's, methods for maintaining an erection, how to get to that euphoric zone of an orgasm without ejaculating and a bunch of other stuff. My favorite technique is the 9 and 1, but only if I can count that high while in the throes of sexual ecstasy.