Royal Flush announced pre-bet
Ok, not much of a story, but playing a $1 sit and go earlier, three of us in it, the flop is 4h, Ks, Js. Minimum bet by everyone, fourth card is As. I'm holding an Ace. But the guy before me goes all-in, and announces at the same time,"Make sure you see my hand at the end, it's fantastic!", so I think Royal Flush, and fold, but the other guy calls it. The first guy is indeed holding the required Ts, Qs for the royal flush, beating the other guy with trip kings. But, why the hell would you announce it? It was early on in the game, he hadnt bluffed anything before, so I'm not sure if he was trying a bluff, or was just so happy to get that hand he didnt realise what he was saying.
Footnote, the guy went out a few hands later on a donk-play, before the money!