Whatcha goin mad for?

exp.

Heard in Dublin

A mocking remark used to irritate or goad someone who is becoming angry.

In use

John: "Would ye ever fuck off slaggin my bird" Paul: "Whatcha goin mad for?! Were only ripping the piss"

Posh English

John: Would you kindly desist from mocking my female companion? Paul: Why ever are you becoming so incensed? We are merely teasing you.