[pyre]

Right, but in Chrome it's as easy as Ctrl + Shift + n from another Chrome window.

edit: I'll note that I don't believe that the parent to this post should be down-voted. It was informative and on-topic.

[gruturo]

Maybe I would have deserved a downvote for forgetting to mention that after opening the second Firefox session you still have to switch it to Private Browsing :-))))