There are oil-based lubricants :: designed specifically for male masturbation. Men apply oil-based lubricants to the penis during masturbation to increase the pleasure and reduce the friction to a nice pleasing sensation. Some brands of oil-based lubricants last longer and remain in a certain state of slickness longer than others. Your personal techniques may have quite a bit to do with what oil-based lubricants work best for you. Speaking about sex toys, you should remember that if your sex toy is made from latex, only use a water-based lubricant. Oil-based lubricants react badly with latex and start deteriorating from then on, causing cracking and peeling of the latex surface.
Masturbation and the attitude :: of some Americans to it roots in history. There exist many evidences proving that just few centuries ago some parents thought the masturbation is a sin or leads to man diseases. They compelled their daughters to wear gloves made of special material called steel wool (like scourers) at night. In addition, they forced them to pour a powder on genitals that made all touches to them very painful. The boys were forced to wear at night metal chastity belts. Of course, the erection is such "clothes" was also painful. Sometimes their methods were very brutal, they new no bounds. To prevent masturbation they pieced the foreskin of their sons with a wire and soldered the ends. Thus the foreskin didn't move. Parents really believed masturbation leads to madness, illness, blindness, impotence and sexual pathologies. In our days it was already proved that it's not true.
Double penetration massager :: or anal-vaginal stimulator is sex toy intended for simultaneous anal vaginal sex. Purchasing this sex toy, you should keep in mind the fact that the space between vaginal and anal orifice is individual for every woman, that is why be careful, choosing the model for your pleasure. Double penetration toy is better to use with personal multipurpose lubricant, which is for anal and vaginal sex. There are people who are prejudiced against such sex toys, they are convinced frequent using of such sex toys leads to the addiction and woman loses her ability to reach orgasm with real person. It is not true. The best way is to treat double penetration stimulator as the instrument for increasing of sexual sensitivity and studying of orgasm mechanism. Research showed that for many women vibrator is the first step to orgasm due to stimulation, then stimulation of the partner and sex follow. Don't forget to use water based lubricant!