The effective stack in this hand was around 40BB, and then I am typically not looking to fold TPTK. I am especially not looking to fold on a spread out board like this, where we can pretty much rule out two pair combos from his range. Even Q9 is a pretty loose call preflop against an EP open, so if he even has it, its probably only Q9s, and there is only 1-2 combos of that hand depending on the suit of your Q. If he can have any other two pair combos than Q9s, then he can have a lot of other hands as well, that he might overvalue or turn into a wild bluff.
But going back to the assumption, he is somewhat reasonable, then you lose to 6 combinations of sets (QQ+ 3-bet pre) and 1-2 combinations of Q9s. But then there are the hands, he overplay, and his bluffs. Like 6 combos of AQ for the chopper, 8 combos of KQ, 4 combos of JTs and so on and so forth. If we plug this range, which I just constucted for him, into Equilab, you have 51,3%
equity. So I am not thrilled, he piled it in, but I am also not going to fold.
To be honest a hand like this is always kind of annoying, because we feel stupid paying off that massive overbet, when we are drawing almost dead. But the way, I look at it, had the guy just called, as probably he should, then I would usually have continued to bet for value, and he would still have gotten my stack, unless the board ran out in a particularly scary way. So he did not really win anything extra with his wild flop line, and at the same time he allowed my to get away cheaply from all my bluffs and weaker made hands than this. If for instance I am C-betting JJ or TT, then I just fold, and he only win a small pot, when he make this silly move on the flop.