Knowles and McCork join us from space to ask 'What is a black hole?' in this exclusive preview of the brand new series of Brain Freeze!

The moment has sparked speculation online, with some viewers suggesting it might indicate a “glitch” or “brain freeze.” One ...

Whoops. This article was originally published on www.si.com as Tom Brady Suffers Awkward Brain Freeze to Start Packers-Vikings Broadcast.