Bloke lost it completely. Embarrassing for anyone claiming to be any sort of intelligent adult. When the guy starts putting on a daft English accent during what should have been a serious debate . . . what can you do but quietly question the fullness of his cognitive development.
In fairness, Piers Morgan is deeply rude himself when it suits him. He is also almost universally despised by his own people - seriously, it is hard to overstate this part, people in the UK hate him. Slimy, smarmy, fundamentally dishonest, lacking in moral fibre yet very intelligent and an excellent talker.
Point here is, Alex whatshisface was invited on to caricature gun people who disagree with Piers Morgan as lunatics, which he did beautifully.