I just saw a great documentary about a band called The Pixies. Truthfully, I was never into their music when I was younger, but after watching this documentary about their comback tour, I am a new fan.
The lead singer is Frank Black (aka Black Francis) and here is some footage of him shaving his head with a clipper backstage.
IMHO this guy epitomizes the sly attitude because, he is overweight, not the best looking guy around, but when he gets onstage he is a Rock God. I also think he rocks the sly look and after watching this documentary, it got me back into being sly. It really is all about confidence.
In one of the clips he is walking to the tour bus and kids in their 20s are calling him their idol. By the way he is 45 years old. It really is all about confidence.
Here is the link on You Tube - Enjoy: