Portuguese slang word used to:
#1 send someone to hell in pure hate
#2 express a terrible moment that just happened to yourself
#3 used between friends to express a moment of joy
It's main used in Portugal and Brazil although part of the Portuguese dictionary of all the CPLP (Community of Portuguese Language Countries).
Example #2:
Portuguese - "Foda-se para esta merda! Peidei-me e caguei as cuecas!"
English - "Fuck this shit! I farted and I shat my pants!"
Example #3:
Portuguese - "Foda-se, ganhaste a lotaria e nΓ£o dizias nada? Γs mesmo um sortudo do caralho."
English - "Seriously, you won the lottery and you were keeping it only for yourself? You're indeed a lucky bastard."