Pegging is, like Hulking, another of those activities that can be fun in either vanilla or domination/submission sex. Or maybe I should say that it’s fun even if you do not typically dominate your male partner.So what, exactly, is “pegging?” It’s using a strap-on dildo on a harness to give your guy anal sex. The strap-on functions as a surrogate cock. As a woman, you might think you should keep the dildo small, but my experience is that a lot of men prefer them bigger, both for visual and physical effect. My favorite one is about seven inches long and normal human width. After all, the hole it is invading can handle the size, and it only takes being gentle for a few minutes until everything is adjusted.