FAQ Friday: Unlike the traditional (male external condom), which is worn on the outside of the penis during sex, the internal (female) condom is worn inside the vagina as a barrier to prevent Condoms only work if you use them right. Swipe through for a quick step by step tutorial. From expiration dates to the right kind of lube, the little details matter more than you think. Trojan Double Ecstasy Lubricated Condoms 10 Count tomthumb Protection works best when you use it right. Follow these simple #Condom do's and don'ts to take care of yourself and your partners.