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."