You haven't actually done anything to me save for needling me constantly. You're frustrating sometimes, yes, but for the most part I just like to argue, you're not bad company at all when you're not trying to annoy me.

[luckily the drink's effects keep him from going Why Am I Saying This. for now.]

Can't say where exactly the line is but it'd be somewhere between 'just being obnoxious' and 'killing someone I like'. I'm sure you'd cross it before getting that far.