Maybe I do need to explain. BB didn't know what the heck I was talking about
Someone picks "Truth" or "Dare," and then the person who asked that someone pick (in this first case, me) must give that person a "Truth" or a "Dare" (whichever one the person picked). If the person picks "Truth," then I would ask that person a question and that person must post a truthful answer. If "Dare" has been picked, then I tell the person, "I dare you to [whatever I want to dare them to do]."* Then whomever has fulfilled the truth or dare asks that someone new pick truth or dare, and then gives that person a truth or dare based on what they ask for.
I also play that if you are too uncomfortable with what you've been asked or told to do, then you can request to have a truth instead of a dare, or a different dare, or whatever!