In Portugal there are several slangs (expressões informais) very common on people.

Fixe! (fisch)

• Cool!
• Nice!

Fogo! (fo-goh)

• Goodness!
• Uau!

Pá! (pah)

• Ex: O que estás a fazer, pá? What are you doing, man?

Porreiro (por-rei-ro)

• Great!
• Excelent.