Are you a MN Vikings fan? The purple/gold?
Hmm...you could add him as a friend with a note or something saying, "Do you happen to be John Doe's son?" If he replies just say something like, "I've heard a lot about you, nice to put a face with the name. Your dad is such nice/funny/friendly guy." A little ass kissing never hurts to get a conversation flowing.
So, so you think you can tell Heaven from Hell,
blue skies from pain.
Can you tell a green field from a cold steel rail?
A smile from a veil?
Do you think you can tell?
And did they get you to trade your heroes for ghosts?
Hot ashes for trees?
Hot air for a cool breeze?
Cold comfort for change?
And did you exchange a walk on part in the war for a lead role in a cage?