In Brazil, the “ok” sign is the equivalent to the finger or “screw you” in America. Actually, many Brazilians make fun of Americans about using the “ok” hand gesture. The most famous incident of using the “ok” sign is when President Nixon visited Brazil in the 50s. Richard Nixon gave the awaiting crowd and the news stations the sign as he descended from his plane. So the next time you to visit Brazil, keep your hands to yourself unless you want to get punched in the face.