Because vibrators often look like a penis many heterosexual guys feel it’s not for them. But you should realise that vibrators come in many shapes, colours and styles. So it must be easy to find one you do like.
Guys can use a vibrator to stimulate the shaft of the penis, to touch the glans or to press it against their frenulum or perineum. Some like to insert it into their anus, possibly combined with stimulating the prostate. To stimulate the prostate you need a vibrator that is curved. This makes it more likely you’ll hit the right spot.
If vibration is too intense can cup your penis with your hand and hold the vibrator against your hand. But you can also place something in between your body and the vibrator, like clothing or a towel.
For guys there are also vibrating penis rings (see the picture on the right). You place this around the base of your penis for extra stimulation during masturbation.
Experiment to find out what works best for you.

See also: masturbation sleeve