Green’s Dictionary of Slang

a general excl. of dismissal, resignation, amazement, surprise etc; often intensified as fucking roll on!

1968		W.R. Burnett Cool Man 66: So roll on, little man. Go. Go. Get lost.
1984		Partridge DSUE (8th edn) 984/2: since mid–C20.
1995		J. Cameron Vinnie Got Blown Away 30: Seventeen-year-old Antiguan bit on some palm beach, fucking roll on.