I wasn't convinced...

Folds to MP who raises to 20, Hero OTB with QQ

Hero raises to 75, SB 4b 150, BB and MP fold, Hero calls

Flop 772 (320)
V checks, Hero 100, V raises 275, Hero calls

Turn K (870)
V checks, Hero?

I would check now. Not getting value from JJ-, if he even plays it this way. And we're beat by all other hands except a small number of Ace high flush draws.

What a strangely played hand from him. Seems like he's clicking buttons at this point. Whereas before I thought he had almost exclusively AA, now when he stops betting I'm less inclined to give him credit. Could this be AA scared that we have KK? Or could he possibly have KK? Or maybe a random A x . Anyway, I'd check, since I think we're all out of value. Let's see what he does on the river.

I still think his most likely holding is AA. He’s checking because he thinks your range is something like TT-AA and he wants to either let you flail with an underpair, or be in a tougher spot on the river when he bets/jams. There’s also the small chance that you just filled up, or that he filled up with KK and is slowplaying.

Checking back and trying to get to showdown as quickly/cheaply as possible.

I would've folded flop.

As played, X back turn, nothing to get value from.

As far as flop X/R range, I would say KK+/AdKd.

looks like KK to me or AA thats now scared of KK. Either that or he really is just clicking away.

I would take my time and make it look like im about to fire big but check in hopes of getting a check out of him on the river.

How is this even a decision?

Because you can decide to check or throw your money in the trash can. You still have to decide. Life is built on choices. The problem is choice.

Folds to MP who raises to 20, Hero OTB with QQ

Hero raises to 75, SB 4b 150, BB and MP fold, Hero calls

Flop 772 (320)
V checks, Hero 100, V raises 275, Hero calls

Turn K (870)
V checks, Hero checks

River 4 (870)
V jams, Hero?

Look down at your crotch, tap your head, laugh in his face while you fold.

It’s a fold from me Dog.

Based on the flop X/R, I don't think you're beating anything by calling river.

Just to add a voice of dissent, I'll say that I can see a call here with reads, putting him specifically on 88-TT.

First things first, from your OP it sounds like you think this guy may have a spaz factor. That's definitely a precondition to even consider a call.

Here are the questions I'd be asking myself: Is this player a capable enough hand reader to recognize that your hand looks a lot like TT-QQ after your turn check back? Is there a chance this player is button-clicking preflop with 88/99? Is there a chance he was also button clicking on the flop with 88/99 when he failed to c-bet? Is there a chance that your very small flop bet induced him to make a thin value 3bet with 88-TT?

If the answers to all the above questions are "possibly", I still might not make this call. It's simply too unlikely that all of these outcomes -- each of which might occur 50% of the time for argument's sake -- occur simultaneously.

However, this river jam seems a bit suspicious. If he does put you on TT-QQ, would he really take this sizing with AA/KK,A K? If you have a read that he generally doesn't bet huge with monster value, I can see a call here with QQ, putting him specifically on 88/99 (and to a lesser extent TT).

TL;DR we can call with very specific reads, but this is a fold on paper. You would need to have included additional info in your OP to make this a call.

I think its pretty clearly a fold here but I think the better discussion is what hand could villain have here that actually makes sense? If its AA or KK it looks like just a bad slow play that prob won the minimum. But anything other than that is interesting IMO

$60 pre, check back flop, fold river.

Wich is pretty normal at LLSNL, where many villains is clicking buttons all the time for a variaty of reasons they feel at the moment.

Results?

GRUNCH:

You said he was capable of bluffing post-flop....Is he capable of a c/r bluff with JTs QJs KQs AJs+ pre [you block those with Q in diamonds] & then c/r otf when those hands are diamonds, or even clubs?

What about AdKc or Kx? Are you inviting a c/r otf if you bet?

If the answer is yes, I check back with then intention of calling ott to most sizes.

Well, now we have a fold.......unless he bluffs like this with with hands I mentioned above.........even then, if he's capable of a shove with 'Nut No Pair' otr....... we really shoulda' ck'd flop.......

If I can't read his soul like Chan in his prime.......which I can't remember the last time I have......I fold.

Results:

His story doesn’t make sense. If he didn’t like the turn then why would he be shoving any river that doesn’t pair the King? If he doesn’t have AA and the King didn’t help him then a second King on the river can only improve his chances due to removal.

I still think he had AA.

He said he was shoving non king turns.

He could have had KK and was upset the turn K killed his action.

Based off the table talk it doesn't sound like this was a bluff.

Yeah this tells me he had AA or KK.