Who would have expected a link between petanque and kissing Fanny

I didn't. But there is. And it's a very nice story you can read here.

"Fanny was a waitress at a local café in the Savoie region or Lyon– no one seems to agree. Watching the men playing pétanque (or boules) one day, she declared that she would allow any man who lost 13-0 in pétanque, to kiss her on the cheek.

As it happened, it the mayor of the local village was the one to embarrassingly not obtain a single point during his game. Fanny wasn’t fond of the mayor because of an earlier discretion. A woman’s scorn? Instead of offering her cheek, she offered quite a different cheek indeed." ...