Ah, you know, the French hate us bourgeois Americans with our tipping and our hamburgers (puffs on cigarette, stares off into the distance.) C'est la vie.
You reminded me of a memory almost 3 decades ago. I was in Holland for 3 months for training. At the home I was staying at my wife was with me, and there was also another American there. In addition there was another couple and some siblings of the owner.
The typical meal there was a multi-course meal. During my stay there she encouraged her tenants to cook something one night representative of the country they were from. When it became the Americans turn we decided - Burgers and Fries ! I have to put this in context - the only burger place we found while there was a McDonalds in the city center and it was only fair by McDonalds standards.
Here is what we did:
11 kilograms (5 pounds) of good ground meat,
cooked over a charcoal grill
Soft rolls from a bakery for buns
fresh potatoes sliced for fries
fresh cut onions and tomatoes
And the owners daughter made a large bowl of salad.
When the meal was finished there was one half-cooked patty left (must have been toward the outside of the grill), no fries, and one fairly full large bowl of salad

. I think most Europeans mock us for our hamburgers because they've actually have never had a GOOD one !
Now , to keep the thread on track. I over tipped a limo driver on a Disney Trip. I tipped about 20% on the cost of the limo service (total) to the driver taking us from the airport to WDW, not realizing that at the end of the trip there would be a different driver picking us up. My mistake.