A phrase said when you couldn't care less about what somebody's saying. The "polite" way of saying "shut up, I don't care".
"I've been looking at company cars"
"Ah right"
"I found a really good one, a SEAT Ibiza"
"Aaahhhh right" (plz shut up why are you telling me this I couldn't care less)
Phrase said by Ricky from trailer park Boys
Ah, Right on! I'm getting drunk as fuck tonight boys!