How to Play with Nipple Clamps
Men have nipples, too. And they enjoy having them tweaked, squeezed, pinched, licked, sucked, and bitten just as much as women do. Wouldn't it be nice to have a custom-made device to keep the pressure on the nipple/aureole area while freeing up your eager hands and mouth for other wicked pursuits? That’s why nipple clamps were invented. Sure you can use clothespegs, but they tend to grip too hard and who wants to hazard splinters from the wooden variety or cuts from the sharp teeth of the plastic type? Alligator clips from Dick Smith? Let's not even go there. Bulldog clips have been known to be employed in a pinch, but they're big and ungainly and look really silly.
So why not use the proper tool designed specifically for the job?

How To
Before attachment, it's a good idea to gauge the pressure to come by affixing a clamp to the web of skin between your thumb and index finger. Don't neglect a thorough warm-up of the area to be clamped. Tease those nips until they're standing proud and tall. (Men's nipples erect, too, only not as much as women's.) You might employ the old porn star trick of twirling an ice cube around the nipples to perk them right up.

As you'll be constricting (and maybe even temporarily halting) blood flow to the clamped area, it's a good idea not to leave the clamps on for more than 10 to 15 minutes at a time. There's another compelling reason to limit duration—they hurt way more coming off than going on. The feeling of blood returning and nerves springing back in the compressed region is quite memorable.

Start by clamping as much flesh as possible. Then you can experiment by gradually grabbing less, which concentrates the pressure and the sensation. Be careful not to nip only the very end of the nipple, which could cause more severe sensation than you intend, not to mention risk tearing the tissue.

Brush the ends of the nipples with a small paintbrush or tease them with a feather or your tongue. Apply a vibrator. Or use nipple clamps with built in vibrators like the Fetish Nipple Clamps.
Try the clamps on different body parts. The male and female genitals provide a wealth of sensitive sites suitable for squeezing between the clamps' jaws. Or try the lips, the tongue, the ear lobes, the underarms... This kind of sensation play is known among the BDSM crowd as TT for tit torture, but it can be as light as you like. People's nipple sensitivity varies greatly, so don't feel wimpy for setting your limits in the "gentle" range.

Selection Factors
Some factors to consider when deciding which model to try:

1.   Is the force adjustable, i.e. can the clamps be adjusted to pinch harder or softer?

 2.   Are they designed to fit around a prominent, protruding small-diameter target (better suited to a woman's erect nipples) or are they capable of grabbing a good     chunk of less prominent nipple and surrounding flesh (better suited to the male anatomy)?

 3.    Do they have a non-punitive gripping surface? You want pressure, not abrasion.

 4.    Do they grip securely? Nothing's more annoying than when the nipple clamps keep falling off every time you give them a little yank.

 5.    Are they relatively easy to apply and remove? Attaching a small clamp to a pinch of flesh is never going to be a simple operation, but it shouldn't require hours of practice, either.

Vibrating Clamps

A breakthrough of technical ingenuity applied to getting you off—and what nobler goal could there be? At first glance, these clamps appear to be one of the standard versions—alligator-type with an adjusting screw limiting how tightly they bite—with attached cylindrical weights. But rotate the control dial and they start to hum. Keep rotating it and they buzz ferociously, applying a compelling vibratory stimulus to the already constricted nipple that elevates the nipple clamping experience into the realm of the unforgettable.