Chela: A synonym for "cerveza," impress the bartender or waitress by ordering a "chela" instead.
Carrete: Whether it's at someone's house, at a bar, or in the middle of the Atacama Desert, don't go looking for a "fiesta" in Chile. Instead, you'll want to keep your ears out for a carrete, or "party."
Cachai?: "Me entiendes?" will still do the trick, but the local way to discern whether or not someone understands you is to ask them, "cachai?" Keep this phrase in your back pocket for any situation where you need to communicate something, whether bargaining at a market, ordering a drink, or arranging a tour with an adventure outfitter.
Bacán: If you want to sound hip and say that something is cool, use the phrase "Que bacán!"
Weón/Weona: When used softy and in calm situations, weón and weona are simply slang ways to refer to a guy or a gal. But if used in the heat of the moment, watch out. The terms can also be used to call someone a jerk, idiot, or fool.