Speaking Argentine Spanish
Most visitors to Argentina quickly notice a large part of the Argentine style of communication relies heavily on gestos (gestures). Certainly originating partially due to the prolific Italian population, Argentine gestures have taken on a life of their own and often mean different things than their Italian counterparts.
Sin Palabras (Speechless) is a bilingual dictionary of Argentine gestures, explaining how they are made, how offensive they are, and vocabulary around the gesture.
For example, a gesture where you bring your 5 fingers to meet and quickly and closely open and close them is a gesture for being really scared.