What typically an older gentleman advises an aggressive person to do as a means of avoiding getting their ass whipped.
Who are you,I'll whip your ass. What,what? Man, gone ahead now,play around with kids,I'm a grown man.
Irish :Used to tell someone they are speaking absolute shite, they're being a dick etc.
Person 1: 'The English hardly ever mention 1966.'
Person 2: 'Gone ahead'