The Houston Texans' Brian Cushing is one of the NFL's best inside linebackers—he's a former Defensive Rookie of the Year and recent Pro Bowler who's easily one of the brightest spots on a promising Texans team. He's also a complete lunatic. 

In one of the greatest miked-up videos we've ever seen, NFL Films had complete access to Cushing during last year's Week 9 game against the Cleveland Browns. This was a very wise decision by NFL Films.

Cushing headbutts a guard without his helmet on. He asks roughly 30 teammates if they saw his celebration dance. He questions Arian Foster about whether he writes "haikus" in his head while running. He screams a lot. Keep in mind that this all came from ONE game! Can you imagine a full season with this guy?

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H/T: Viral Viral Videos