Not every hand gesture is universal. And sometimes, making what you think is an innocent gesture in one country can land you in hot water somewhere else. Just ask any traveler who's given a thumbs ...

This is why it's important to be aware of some popular European hand gestures before your trip, according to Steves. However, one gesture stands out as prime grounds for a serious miscommunication ...

Another common gesture is bikers pointing two fingers down – a simple gesture of acknowledgment and solidarity. Riders use this signal to recognize and greet fellow motorcyclists on the road.