More live tells

More hands from last Friday:

I can't quite remember exactly how the hand played out, but by the river, I was heads-up with a poor player who mainly relied upon luck and improbable bluffs to win at poker.  I'm somewhat certain that I had at least a top pair, top kicker or and overpair by the river facing a 4-straight 4-5-7-8 -type board.  I remember checking to the the player who led large (the pot was somewhat large so this bet was consistent with pot size).  However, he did not think about the prior action, and how unlikely it would be for him to show up with a 6.  More interestingly, almost immediately after putting out the bet, I started counting chips and thinking about the hand.  Due to his "impatience," he called out "I have the straight," while looking right at me.  Then, "realizing his mistake," said,"Oh, you didn't call, huh...  you haven't called yet...  Damn...  We'll I'm going to be nice and let you know that I have the straight.  You should fold and save yourself money."  It was so poorly timed / coreographed, that I wasn't sure whether he was trying reverse psychology.  This attempt at accidentally calling out his hand was so poor that I thought he was trying to make me think that he intended it to be a false tell.  With nothing left on his end or mine, as far as betting, I started talking to him.  I asked him after he started insisting on the straight that he show me the cards.  He flat out refused.  I said show me one card then.  Immediate and sharp refusal.  After working up the profile, I concluded that he was bluffing and made the call to take the pot vs. his AJ two overcard bluff.  Almost a week later, and I'm still stupefied that someone could bluff so poorly.  His tell was precisely so poor and obvious, looking at me while acting shocked and embarrassed that I hadn't made the call after telling me that he had a straight was just awful.