I actually have them coded as a separate tab that only appears for people who join the adult network. However, I made menu edits last week and I broke the code. :/ I am waiting on the developer to fix it.
In the future, you can make suggestions via the feedback tab if you like. I don't see everything in the Q&A, so that's the best way to make sure your comments actually reach the person who can take action.
If you are old enough, you can find the adult stuff. The kids aren't supposed to go there, but my guess is that they can walk right in if they want to.
Just Asking 