Doing a proper Sic 'em Bears:
Raise your Bear claw into the air (To form a proper Bear claw grab your knee with your right hand, then raise it into the air), and shake it as if your Baylor spirit is moving up your arm and reaches critical mass in your claw! As you're shaking your Bear claw, yell a sustained "Heyyy..."
Then bust out with a loud "Sic 'em!" as you swipe your Bear claw down and across like a bear slashing at his prey, then...
Ferociously bring your Bear claw back up into the air like a Bear ripping out the still-beating heart of his prey, and yell "Bears!" Put some attitude behind it!