It's a site that you have opened on a different tab, that you can go to in case your parent/guardian pops up and catches you on a website you're not supposed to on.
Friend 1: Dude, why do we need another tab open?
Friend 2: Its my backup site so I can quickly switch in case my mom walks in.
Friend 2: Its my backup site so I can quickly switch in case my mom walks in.
by harajukuluvr May 19, 2009