Pulling a Brad is when an employee handles work-related request with such enthusiasm and charisma that he/she will actually begin to flex uncontrollably, typically to the point where clothing is damaged (see hulk out).
Person 1: Hey buddy, do you mind getting me some more printer paper? We are getting pretty low.
Person 2: IT WOULD BE MY PLEASURE AAARRRRRGGHH (shirt rips off)
Person 1: Looks like someone is pulling a Brad today...
When you pull out your phone and one of your friends tries to read your texts msg's or ask you who, or what you are talking about.
One can also Pull a Brad on msn when one of your friends tries to read your conversations.
Doug- "So who is that your texting?", While creeping over James' shoulder.
James- "Dude wtf dont even Pull a Brad."