What a Faux Pas! Rude Americans Arrive in France

But the more outrageous and extroverted the couple behaved, the more everyone, even the Parisians, seemed to love Bob and Bonnie. Where were the haughty French we expected? Not on this boat, it seemed.

Bob and Bonnie pose on the balcony at the Plaza Athenee, the upscale hotel featured in the last season of "Sex and the City."

(ABC News)
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Bob and Bonnie mugged for snapshots, shouted "George Bush!" at passing boats and bragged about the United States. "You've got to come," boasted Bob. "It's so much prettier!"

Some of the other diners were quite friendly. Several of them even joined Bob and Bonnie in group photos and toasted their champagne glasses as they sailed down the Seine.

At the end of the ride, "What Would You Do?" anchor John Quinones caught up with Lacatos to see what he really thought of the couple. Surprisingly, Lacatos said that the actors did not bother him. In fact, he said it's the French who are often the most difficult diners.

"Are [Americans] too demanding sometimes?" Quinones asked.

"No, not at all, very nice," he said in French.

Faux Pas No. 3: Ordering the Steak Tartare … Cooked

But what would happen if Bob and Bonnie invaded one of the most charming, picturesque restaurants in all of Paris? They were about to make an unforgettable impression.

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The next stop: Brasserie de l'Ile Saint-Louis, a charming, quaint cafe perched on an island in the Seine River, a short stroll from Notre Dame. This sleepy French café was about to get a wake-up call.

Bob and Bonnie hadn't even sat down, but one Frenchwoman spotted them right away, and made a face not to be forgotten. If looks could kill, this woman would be lethal.

"You got beer here?" Bob asked loudly. "Two beers, big ones! I don't know why they don't have red, white and blue Budweiser."

She continued eyeing the actors, staring in horror at their plastic Croc sandals.

"You got English menus?" Bob said as she looked on. "Yeah, no French crap."

"We don't speak no French," Bonnie chimed in.

For more than 20 minutes, Parisian Giane Noutardier never said a word. But her looks spoke volumes.

Faux Pas No. 4: Referring to Your Waiter as Garçon

Signaling the waiter, Bob began shouting, "Garçon, garçon!"

Etiquette expert Stimmler-Hall explained. "You're basically saying 'boy,' which probably came from back in the days when he was actually your servant. Your food will come out with a fly in it if you do that."

But of course, this waiter had no idea that hidden cameras were rolling. Or that worse behavior was still to come.

It was time to order from the menu, and to ratchet things up. So Bob and Bonnie called the waiter over and placed their order: the steak tartare … cooked.