The Punk and the Old Fart
There was an old man in a bar who was staring at a punk in the corner. The punk had multicolored, spiked hair and multicolored feather earings.
After a while the punk got mad and said to the old man "What are you staring at?"
"Back when I was in the army I got really drunk one night and fucked a parrot.
I was wondering if you were my son."