Played a hand yesterday. Betting and stuff doesn't really matter. Guy to my left had been luck-boxing his way to a big stack. I had top pair and checked river to him. He bet pot, I called.

He says "straight". I hold my cards and wait for him to show. There were 3 coordinated cards to a straight, board was something like 53QT2.

He turns over 45o for a pair and 4 to a straight.

I look at the board, and initially I'm like "are you serious?!?!" Then I'm like, that's not a straight. I table my hand and win with top pair. He said he honestly thought he rivered a straight.

Always have the winning hand tabled if you call. If I had mucked before he showed, I'm the one out of luck.