So my internet had a little spazz out a couple minutes ago, but I accidentally clicked on something on my history, so now I can view the recently closed tabs, and windows. I was on Twitter, which I'm not supposed to have and it's showing up in the closed tabs and closed windows thing, and I can't figure out how to delete it from there, or how to get rid of that part of the history, cause it wasn't there before. How do I fix it? (I'm on Mozilla Firefox by the way.) Thanks.