While this vibe has gotten less than stellar reviews in the past, I believe it has a valid niche to fill.  The Finger Fun is waterproof and the bullet is removable from the sleeve, which (coupled with its scarcely-placed nubs) make it easy to clean.  It is a TPR Silicone toy, so if you decide to use a lube with it, be sure that your lube is water-based. One thing this toy does do pretty well is partner play. I had my best luck using it during sex with my boyfriend. It's small and stays put on your finger, so I managed to slip it between us (during missionary) pretty easily. You're able to control the intensity of the vibration (albeit modest on its highest setting), and since it's on the finger, you get more control over where it goes than with a vibrating cock ring.

As I mentioned, the vibration on this toy is fairly weak, so if you're a girl whose other best friend is a Hitachi (like me) or something of similar power, this vibe is probably not for you. Other than that, my biggest problem was the placement of the power dial. It's hard to increase or decrease the power on this thing when you're actually using it, which is pretty stupid. The batteries for this toy are unfortunately relatively obscure. You can find them at stores, but unless you are a finger vibe pro (or happen to have an affinity for wrist watches) you probably won't have them lying around the house in case of an emergency. Something I thought was particularly peculiar were the randomly placed nubs. They're all over the vibe sleeve and don't seem to be placed with any specific logic in mind. At any rate, I suggest using a quality water-based lube (such as Empowered's Pink Water) to enhance the feeling of these nubs on your skin.

This toy is recommended for first-time users looking for something discreet, waterproof and easy to manipulate. Not recommended for those who want a lot of power or don't stockpile obscure watch batteries.

When you're going down on your boy, try licking the tip of this little guy and then rubbing it up and down his balls. Small and snug on your finger so it's easy to manipulate, and not so loud that it makes him nervous so close to his junk.