YBR SBR is an abbreviation for ‘You’ll be right, she’ll be right.’ It is often used when someone complains or doesn’t like someone or something. Typical aussies pronounce it as ‘ Ye be right, She be right’
John - ‘Fuck it’s a scorcher today, I might die’
Alex - ‘Shut up John, YBR SBR (Ye be right, she be right)’