Answer:
A gentleman whose offspring have successfully produced offspring of their own.
What should you do when you see a green man?
What hangs in the sky by day but at night goes away?
Temporary evidence of where you've been strolling
There's one in every deck of cards and in a famous movie
When is it bad luck to see a black cat?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?