Most vibrators will have a speed dial so make full use of the different settings when playing with her - ease into it with a low setting. Don't merely insert the vibrator straight into her vagina; utilize the toy to tease her. Put the vibrator on several sensitive spots on her body - enjoy learning which sensations she likes best by moving the vibrator over different parts of her body. Tease her by moving the head of the vibrator round the clitoris without directly touching it, until she asks you for additional. For a variation hold her vibrator within your hand as you stroke her clitoris to get a special pleasurable feeling.
As the partner builds towards climax, play cat and mouse, by slowing the vibrator again or withdraw it completely teasing your girlfriend until she moans for additional. Women will find it hard to orgasm just through penetration alone, keep your vibrator going within sex, by putting her on the top and putting the vibrator on the base of the penis sends waves of pleasure for both people. Alternatively you could tease her clit with a sex toy when you take her from behind.
If you aren't confident using a anal sex toys to tease and pleasure your girlfriend, ask her to inform you what she wants to do with her own toy, what better way is there rather than watch and discover? Another option to drive her crazy is a wireless vibrator - providing you with the treatments for her orgasm. Nothing can beat the excitement of a man controlling his partner's pleasure via remote control. Using a wireless remotes means the possibilities to enjoy this discreet toy are endless; get the girlfriend to put on it wherever she dares!