An ill-mannered gentleman; On the one hand he's rude and brash, making you want to call him a cunt, but you also recognise there is a gentlemanly aura surrounding him.
(A man crashes into your car)
Car crash victim: 'EEEEEEYYYY, CUNT'
Cuntleman: 'Oh dear, what crude language! I'm terribly sorry but i believe it was your fault, young sir'
Car crash victim: 'Ok, sorry, i take it back. '
You: You've surprised me, when I first met you I thought you were a fuck tard, but now I'm undecided Me: Well that's a cuntliment if ever I've heard one
A cuntpliment happens when a person is given a compliment which is immediately followed with a jab at the person being complimented - or, alternatively, a jab at a person followed by a compliment.