We are all familiar with Donald Trump’s presidency, where he animatedly used the thumbs-up sign to indicate everything was cool and dandy-like, he laughed regularly with his mouth open, and often gesticulated with the thumb and index finger of his left hand joined to form a circle when on the podium. Presumably unknown to Mr President at the time, these otherwise harmless gestures are often deemed rude or even a highly offensive insult in some parts of the world.
