I think the only thing I left open was Gaia when I was... 14? It was a mistake, because my grandma read a post stating, "*The demon walked in.*" She told my mom I was doing witch craft over the computer and that I had the Gates of Hell as the background on said computer.
I've never been really caught with anything else. The occasional porn, but that's at home. Since I'm using my mom's computer, I'm especially careful to close BM, but I don't think it would be a big deal if she found a page. She did own a porn site at one point it time. ._.