NEVER ask ¿Qué Marcelo? in ARGENTINA
Questions you NEVER have to ask in Argentina. If someone asks you if you already uploaded the photo, NEVER say "¿Qué foto?" If they want to know if you are going to the march, under no circumstances do you answer "¿Qué marcha?" If an Argentinian tells you about Marcelo or Alberto and you don't know who they are talking about, JUST DON'T ASK!