A group of guys took a trip to France and decided to attend the Chabad House in a small town, even though none of them understood French.
They weren’t the most usual shul goers, even at home, and it was even harder
to follow the service in a foreign language, so they decided to stand and
sit when the rest of the congregation did.
At one point, the Rabbi spoke and the man sitting next to them stood up, so
they got up too. The entire congregation broke into hearty laughter.
After the service they approached the Shliach, who spoke English, and asked
him what had been so funny. The Rabbi said he had announced a birth and
asked the father to stand up.