I'd owned vibrators since I was 18 or so, but only the battery-powered dildo kind, which were great fun when applied to my girlfriends' clits, but weren't strong enough to do anything for me.
When I was 25, tired of having batteries run out at the wrong moment, I bought a Panasonic that plugged into the wall. One day I wondered what it would feel like on my penis. It was weird at first, but I thought, maybe this is what it feels like for girls, heck, maybe I can get off like they do. So I held the thing against the head of my cock, bracing the underside with my other hand. After a few minutes, POW! I had the most intense orgasm of my life. Eventually I figured out that it's a lot more comfortable to put the vibe just below the head, pressing my cock against my stomach.
My favorite jerk-off (buzz-off?) routine is to watch MPEGs of women coming from a vibrator, their fingers, stream of water in a bathtub, or oral sex. But the masturbation and orgasms have to be realistic, and the women have to look real-no bleached, shaved pornstars with boob jobs, please.