oh my god there are so many!! the most common is "cara", which just means like "dude", but here we use it A LOT at the start of a sentence or anywhere, really. we say it a lot. I also love "deu bom/deu ruim". they're used to say when something went right or wrong respectively. "deu" is the past tense of "dar", which is give but don't worry about it. "bom" means good and "ruim" means bad. so if something went ok, it "deu bom"! skjdhfkj (this was harder to explain than i thought)