Dildo: An artifical substitute for an erect penis
(Websters')
Dildos come in many different shapes and sizes, but all of them are meant to do one thing: in some way, shape, or form, they are meant to be a substitute or symbol for a real penis. If you are inclined to believe Freud, then the Washington Monument could be considered a dildo. For our purposes, though, a dildo is a sex toy, usually made of latex or silicone, designed to be inserted into some bodily orifice for sexual pleasure.
People use dildos for a variety of purposes. Although most women can orgasm through clitoral stimulation, many do enjoy the feeling of something hard and thrusting inside them during masturbation. Many men, gay or otherwise, feel the same way, using small (or as your tastes go, large) dildos for anal stimulation. A dildo can be used with a harness to give a woman a penis she can thrust with and still keep her hands free.
Buying a dildo involves a number of factors, such as length, thickness, hardness and texture. It is strongly recommended that you comparison shop with your hands, looking for one with a smooth surface made of a firm, but not too firm, latex. Dildo shopping is a very personal activity, and you should take your time buying one.
The two most common materials for a dildo are silicone and latex. Silicone is usually more expensive, but most people who use dildos regularly agree that its qualities of matching body temperature and its general texture make it the superior material. As with anything, you get what you pay for.
The most important thing to remember is that you should start small. Buy dildos
you *know* you can probably handle, rather than ones you hope to be able to
handle. Get your money's worth out of any toy you buy.