17 Things Americans Do That Are Considered Rude Elsewhere Photo credit: CC license by bradleygee 6. Greece Any gesture involving making your palm visible, including waving is offensive. If you want to wave hello or goodbye to someone in Greece, you must do so with your palm facing toward you, similar to how a beauty pageant contestant or a member of a royal family would wave. Prev6 of 19Next From Around The Web Facebook Comments comments