An old man was sitting on a bench at the mall.

A young man 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 young man looked, the old man was staring.

The young man 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 parrot. I was just wondering if you were my son."