5 bet with air? Where are you regularly playing at, Poker After Dark or PartyPoker
Big Games? I'll be sure to look out for you on tv next time.
Joking aside, never 5 bet with air please, even at the casino...
4 bet with weak hands only with SOLID reads on aggros. I see people flatting 3xBB all the time with AK and QQ so don't think you're gonna be up against marginal hands after villain 3 bets you.