Being in the dark is not doing your sexual health or self-understanding any favors. It's important that we talk about all kinds of sex because not everyone is having, or wants to have, "penis in the vagina" sex. If you do have "penis in the vagina" sex and are curious about something else, or are finding that that type of sex is not for you and you'd just like to explore other options, it's helpful to know the facts. Even if you do learn more and decide anal sex is not a thing you'd like to try, it doesn't hurt to have the information. If you're not comfortable reading about anal sex, that's perfectly OK, too.