The old man and the Punk

An old man was sitting on a bench at the mall. A young punk walked up to the bench and sat down. He had spiked hair in all different colors: green, red, orange, blue and yellow. The old man just stared. Every time the punk looked, the old man was staring at him. The punk finally said sarcastically, "What's the matter, old timer? Never done anything wild in your life?" Without batting an eye, the old man replied, "Got drunk once and had sex with a peacock. I was just wondering if you were my son.