Go into the "sex forum" then click on a category (preferrably one that best fits the category your posting about.) Say you're posting about vibrators. Go to Sex Forum then click the little link that says "Vibrators" and scroll to the very bottom and you will see "Start a discussion" or "Start A Poll" Click "Start A Poll" then you will be given a form like thing to fill out and you can type in the answers. You also have the option of making your poll multiple answer that way people can choose more than one option on you poll.
Hope this was helpful.