Do you know your enemy?'s definitions

Know Your Enemy

A new song by the Northern-California based punk rock band Green Day.
The song is very simple-sounding, but very awesome.
It was also played at the beginning on the NCAA basketball championship in April 2009.

"Do you know the enemy?
Do you know your enemy?
Well gotta know your enemy Wha-hur!"

by Do you know your enemy? April 6, 2009