And why would the grandfather resist? When else would he have such an opportunity. Besides, it's always easier with a temperamental woman - she gets herself turned on and therefore comes much faster. You would have tried to bring to orgasm phlegmatic fat girl with a huge hollow. That's the kind of woman you should run away from. I've been in the middle of one of those, you can't wish it on the enemy.
Gorgeous fat chick, her husband obviously can't handle her anymore. And he's not really interested in her either! Such a body shouldn't stand idle for nothing! He should also thank his son - the lady gets everything she needs at home and will definitely not be looking for a lover on the side. All in all, everything is like in a normal Swedish family, everyone is happy! In my opinion it is better for him to share his wife with his son than for her to go out with some strange man.