[All he learned from that is "teasing tsunderes is funny as hell" and "don't piss them off too much or you'll get set on fire" :(]

Yeah, I can tell. [More like it's stupidly easy to tell, but he'll try to be nice about it ...] You should really try to relax a little when people do things like that with you. Unless you like making your buttons so easy to push. [... well, the keyword WAS "try".]