People really need to stop assuming nobody understands French
A Caucasian family was eating burgers on vacation at the beach when a couple nearby started talking about them in French.
They were speaking English among themselves, so the couple probably assumed French would be safe.
The woman made a comment about the dad eating two burgers and said he looked like he needed a salad.
One of the siblings answered in French.
The reaction was apparently immediate. Bright red face, awkward silence, then they left.
Imagine trying to embarrass someone in another language and accidentally embarrassing yourself instead.