He's 88. I notice Sidoh posted while I was thinking about it. I guess I'll see in a sec if I got it right too!
Edit: That's whack. Birthday is slang for a reoccuring day. Next year I want to hear you be a complete tool and say "Happy Birth Anniversary Grandpa." He had 22 birthdays making him 88 because he was born on feb. 29th. that's it bitchez.