A simple and fun game for the whole family; simply add your own 'grandpa (or grandma) question.
I'll kick things off:
Q: Grandpa, why do you have a tattoo of a bird?
A: Well, little Johnny, in the 80's and early 90's I was famous for going to clubs and guzzling gallons of spunk from friends/strangers, and I thought it'd be a nice idea to commemorate my achievements with a swallow tattoo on my neck.