[ Remarkably he's rather non-reactive towards the insults, at least until the end. Yes, yes, are you quite done—he waves a hand once Dito finishes. The vulgarity is colorful sure, but he's used to dealing with this in some way. ]

Ah adolescence, I remember quite well. It is for myself, yes but make no mistake, it is not because I think I am a good man or think you deserve those words. We are both going to hell, non? That does not mean we need to be uncivilized cur about it, though I doubt that will stop you.

Perhaps you could view it as human nature, if you want a reason.