I really wouldn't have spent much time fondling and masturbating him. I would have had my lips around his penis right away so I could feel it grow, and tried to get most of his semen in my mouth so I could savor it before swallowing.
I really liked hearing family background noises. I would have wanted to have my lips around the old fellow's penis when he ejaculated, so I could feel and taste his semen. If it was too much to swallow all at once, I would lick up any that spilled.
He ejaculated a lot of semen for an old guy!!!