Getting wild!

I was at the mall the other day eating at the food court. I noticed an old man watching a teenager sitting next to him. The teenager had spiked hair in all different colors: green, red, orange, and blue. The old man kept staring at him. The teenager would look and find the old man staring every time. When the teenager had enough, he sarcastically asked, "What's the matter old man, never done anything wild in your life?" The old man did not bat an eye in his response, "Got drunk once and had sex with a peacock. I was just wondering if you were my son."