Best response to the moronic maniac who sucks you dry? Nothing. Stone silence. If he puts you out, walk away. If you're still at the table, turn off your chat, get up, walk around, cool off, shake it off, sit back down, and try to play as if it never happened. Firing the first shot in a no-win argument with a faceless idiot is useless. He thinks he just made the play of the century and you're not going to change his mind about that. But you just might take all his chips an hour later when he tries the same lame play and you bust him good.
Secondly, do yourself a huge favor and forget the concept of "the way you're supposed to play poker". Congrats on making the effort to read up and improve your game. That time spent is a great investment in becoming a better player. But you'll drive yourself insane if you think that everyone at your table is going to play "by the book". For one thing, two-thirds of them can't read. And, most importantly, not even the top level pros play conventional cards ALL the time. They mix it up. They play with their gut. They GAMBLE.
It would be a much less frustrating game if everyone played poker by the numbers. But it would also be a lot more boring!