Override Custom Context Menu in Firefox
So, I'm on this web site and I right-click on the page. I was surprised to find a nicely designed custom context menu. But I thought to myself, "How annoying... I want to use the actual context menu." I tried holding down the CTRL key (don't ask me why) and was pleasantly surprised to find the Firefox context menu.
I haven't tried this on a clean install so it could be one of the many plugins that I have installed but either way, I like it.