I have felt the urge to do this, but it would probably break my hand. Hurtful! Not worth it.
Iconic Stickers - The Incredible Hulk Fist Punch Boys Wall Sticker Art Decal Design Graphic Kid R3 - As Pictured - Size: Small - Colour: Black: Amazon.co.uk: Kitchen & Home
Fist/Punch/Pow - Robert Dale
Iron Fist: The Living Weapon by Kaare Andrews
How To Draw Anime Hands Fist | How to draw video tutorial step by step