When we visit a site where the owner doesn't speak English why is it that we both sound like Del Boy when we say "Tres bon, tres bon"?

We had a busy day yesterday, we left the 'unmentionable owners' site just after 8am then racked up 120 miles visiting FOUR sites, a record. We are now down in Artemare at our last one for a few days. We are just a stones throw from Aix-les-Bains and Annecy so once we tidy up a few loose ends this morning we are heading to an aire at the A-L-B.