Manning was a tremendous talent, but as already been said, sadly with some very distasteful material.
I do remember a couple of comments made to hecklers at a live gig which stick in my mind.
Heckler... "gerroff, yer fat b**tard"
Manning... " Let me correct you, Sir. Fat, RICH, b**tard, if you don't mind!"
Heckler... "Boo!.. Boo!.. BOO!!!"
Manning... "We do have something in common, mate. I was on telly last night, and I do remember seeing you on telly also... umm, yep, Interference!"