So, I will complete the details in full after and explain what happened in full. For now:

Two players max buy in. Player in cutoff raises, BB re-raises, CO shoves, BB calls.

Before any cards are rolled over, BB asks player in CO "do you have aces"? he shakes his head no, player in BB says "oh, I do" and shows his hand.

Board plays out, player in CO mucks without showing his cards. If you are player in CO would you consider this slow rolling and/or bad etiquette?

I will explain what happened after...

Not optimal, but not that bad. If BB was going to show anyway, he might as well have just said "I have aces".

But what he said really shouldn't have impacted CO's thoughts on where they were in the hand unless CO had exactly KK. If I was CO and had, say, QQ and BB said "do you have aces?" i would assume BB had KK and I was beaten anyway.

It's slightly douchey but it's whatever. At least he didn't say what he said and then wait for everything to be done before revealing his hand. I think some people forget how awkward some poker players are and always go straight to thinking about the worst intent.

Big whoop. On the poor etiquette scale, I give it a 3. He still rolled his hand over right away(which he didn't have to do).

It is a 1 out of 10 on the etiquette scale. It is just a good natured ribbing. People need to lighten up at the poker table, especially the "pros".

I accept this tabletalk. Do understand somebody with AA wants to chew on it a bit. A bit childish it is anyway.

Probability of me having AA, when he already has it, is a one in a zillion. If he's gloating or having a malicious voice, then I don't accept

Not at all.

If anything, the guy in the CO was the slow-roller. In fact, he was the non-roller. And he should have even been the first one to show since he was the last bettor.

There have been several times I was in the position of BB. I didn't ask the question, but I was the guy with aces, and I turned them over immediately. Then I waited for the board to run out, other guy still isn't showing. Then after the river he shows his JJ or whatever that flopped a set and I lost. It felt like getting slowrolled. The guy who didn't show is the douchey one here, not the guy who turned up his hand.

Hopefully I would react by politely congratulating my opponent on their victory.

No. If it's a cash game the hand doesn't need to be turned over until the river anyway, so he can't be slow rolling if he showed his hand before he needed to.

Slightly annoying for the BB to say that, but if that pisses you off I have a feeling you are going to spend most of your time at the poker table pissed off so CO should get over it.

Unnecessary needle, IMO. But he in no way slow rolled his opponent.

If he shows or mucks immediately after the river is dealt, there's no problem. If I have to listen to a speech about how badly I played or how well he played, there will be a massive eyeroll.

Tough for anyone to claim I played badly when I got it all in preflop with Aces; I have to say I have never heard that one.

If this is a "I want to see the hand" story, then yes, the pot goes to CO when the dealer tables his hand and it is better than the BB's. And yeah, each time I've seen it the person who asked to see it whines about how the other player shouldn't get the pot because he folded.

What is the LCP Forum punishment for Failure To Deliver?

A bit of a verbal needle but to each his own.

I agree that generally a player will only go one above his hand when asking someone what they are holding. But when someone has Aces then he is free to guess whatever he wants. It could be that this player would never call so much PF with anything but AA!! GL

Sorry I forgot about this. The comment makes a lot more sense when you understand the unknown context which I purposely omitted. This happened at my table a few years ago, the back story explains why the discussion happened this way. It's a bit of a trick situation but I wanted to at least gather some thoughts.

The experienced player who I have never seen angle shoot and who plays the game the "right way" moved up in limits on a weekend game and made this particular comment. He was taking a shot at the bigger game.

The weekend earlier we were both at the same table when two players who knew each other were in a preflop raising war. After a lengthy delay, one player called his stack off, and both players turned over kings and laughed, shaking hands, happy the other guy didn't have aces and claiming it would be an easier ride home as they both rode the same casino bus. I piped in fully serious "don't be too relaxed yet, one of you could hit a flush". One of them gave me a "yeah right" look.

As fate would have it, three clubs hit the flop and the river spiked the fourth club, and the peaceful ride home together now would become less comfortable as one of them slid his stack to the other. The person who made the initial comment I typed in the original post went to the Pit Boss immediately after the hand and asked him if in such a situation, if both players agreed and the action had been complete, could they simply bring their stacks back and not play the board out. Now, in Ontario casinos I had never seen this happen nor proposed, and I am certain it is not allowed (well, fairly certain anyways), but, the Boss told him "sure, as long as they both agree, why not"?

Back to the initial comment now. This experienced player had aces and was asking the other player if he had aces before the dealer dealt a card so that they could simply bring their chips back (he assumed) and end the hand without any risk if in fact he did have them. He didn't want to get into that 1% shot of losing his stack with some horrific bad luck.

As the hand was playing out, the player didn't know what the other guy had, but he was explaining the story quickly to the table as to why he said that. He felt bad even though he didn't angle shoot or anything, but it was his nature to not want to be an idiot. He won the hand and never saw the other players cards, the other player didn't make an issue at all and simply reached into his wallet for a reload so it certainly didn't bother the losing player.

My personal opinion is that if someone does this purposely it's bad sportsmanship (the comment). I think in any hand when you are closing the action with a player all in and you know you are calling it is bad taste to do this to anyone. Not illegal, maybe not harmful, but simply bad karma. That's just my take on it anyways. In this particular case, it was not this at all s it were, but to someone just sitting at the table it might not appear that way.