In english means: "where do you live?" Used to mark despise for someone lacking the knowledge/information about something very popular, an important event, or someone famous. e.g.:
Person 1: "Did you hear Hayfa Wehbe's latest hit?" Person 2: "Who's she?" Person 1: "OMG! you don't know who Hayfa is?" Person 2: "Nop, no clue!" Person 1: "Man! wen 3ayesh?"
Ma ta3melle 7obbak nar - ما تعملي حبك نار : Lebanese Slang, of unknown origin. Meaning: "Don't make a passion from your love". This is used to contest someone's over reaction to a situation.