In the birthplace of pommes frites land that inspired the term "Freedom Fries," we find this public ad for les golden arches. Featured: two puppies humping, a shocked child, and a bored father, presumably around dinnertime. The French tagline, translated: "I'll explain that to you at McDonalds." Yeah, I know the snapshot is a couple of years old. Link (thanks, Cate)
Correction: Reader Dan astutely says, "You called France the home of french-fries. French fries actually originated in Belgium." Oui, c'est vrai.