You beat a lot ... busted straight draw, missed overs, weaker top pair hand, middle pair 77/88ish ... but I don't think you beat anything that bets like this unless the guy is just a nut bluff-bot in a limped pot...particularly after you have shown a willingness to call him down, a river bluff would be pretty spewy on his part.

Still, I wouldn't be surprised if he turned up 78 but I'm not likely to put so much money into a limped pot with TPTK like this...more power to you if you picked off a bluff. I'll agree that his line screams 'the nuts or nuthin'.