I'll pay that

Used by Australians to positively affirm a statement/opinion someone makes/has. The saying originates from Australian Rules Football, Australia's national sport, where an umpire "pays" a free kick, a mark (catch from a kick), etc.

P1: Mate, i just don't like meat pies.

P2: That's so unAustralian.

P3: Yeah, i'll pay that.