Nowadays, everybody used to say "Falou" in the ends calls. But it you translate it, you'll found "spoke or talk" and that's souds so funny. Why do we people say "talk" in the end of a phone call? Is only to mean: "I get it" or "thats my final word, bye".
Brasilians use to talk a lot of funny slags. If I hit someone on the street, normally we say "Me desculpa" but almost everybody says as aswer "Imagina" (imagine) than "Tudo bem" (That's all right). Imagine? Imagine WHAT? haha. It means: I can't imagine you hiting me for hurt.
And there are a lot of cool funny portugue slangs. :D
I hope you understand my English! Hugs.