2/5nl effective stacks $320, Hero covers.
The villain in question was in his 60s, super quiet and looked a bit uncomfortable. He was one of the only other players at the table folding from the SB and not completing for $3 despite situations in which there were lots of limpers preflop.
He had a VPIP of like 8% and folded for an hour straight until I witnessed the following hand. A really loose aggro player who has been raising 30% of all his hands raises $20 from UTG+1, MP calls, LP calls, Villain tanks and it looks like he wants to fold but he calls from the CO.
Flop(80) Q
5
9
UTG+1 bets 40, MP, LP folds, V calls.
Turn(160) 4
UTG+1 checks, V checks
River(160) A
UTG bets 100, V calls
UTG shows AKo, V wins with A
Q
This hand basically confirmed in my mind that V was the typical weak-tight nit especially when he doesn't raise the river with top two pair. A few hands later, he flopped a set and lost to TPGK that turned into a backdoor flush. But even in that hand, he just called down in position, never raised, and paid off a pot sized bet on river and lost about $200.
20 minutes later this hand occurs. Eff stacks $320, Hero covers and has QQ
UTG limps, UTG+1 (super loose, raising every hand) raises $20, V is next and insta calls, Hero is next and bumps it to $60, folds around to UTG+1 who tanks and then folds. V insta shoves all-in for $300-ish... Hero???
Based on the way he has been playing and his image, there is no way he is ever shoving here with AK/JJ. Just never. I decided to show my laydown since there were a lot of aggro players at the table and I wanted them to think that they could blow me off a hand.
I table my QQ and muck, villain slams his fist on the table and says, "Damn, good fold" and he tables AA.
Analysis.
This old man coffee (OMC) nit is just never shoving all-in even with AK/JJ in this spot like ever. These types of players do not play like that. Even though he was sorta short stacked at $320 ish, he just isn't shoving with AK because players like him don't consider AK a real made hand. They may raise with it, but if they don't hit flop they aren't c-betting... Given the fact that he didn't even go for a value bet with top two pair on that previous hand and that he just check/called down his flopped set in the other hand tells me everything I need to know about how comfortable he is playing for stacks.
Now, most players would level themselves with the fact that the nit didn't 3-bet. However, weak-tight nits hate getting AA in early position and when they do, they like to go for the l/rr. Since the player to his immediate right raised, the nit still won't feel comfortable re-raising so soon and would still feel the need to be trappy and slow play. Even if this doesn't make sense to us, we can take solace in the fact that this nit is NEVER 4-betting us here with JJ/AK.
The typical player would have stacked off here because QQ is a strong hand and he would think "Its only $300, pot is already $100..." However, OMC nit's 4-bet shoving range is AA and AA only. I don't even think he shoves with KK here.
So, I saved what I felt was an easy $300 by folding. Now, if I hadn't witnessed those other hands the nit was involved in, this would have been a much tougher decision. but having witnessed the nit in action, this was the easiest fold in the world. Incidentally, a few orbits later, the aggros tried to bluff me off big hands