Whoopsy Daisy
We just had an interesting situation develop at a nearby table that serves as a great reminder as to why it's important to pay attention at the poker table at all times. In the hand, an under-the-gun player moved all in for 49,500 and action folded around to the player on the button, who apparently didn't see the big raise.
The button threw in 8,000 for what he thought was a raise. When the dealer informed him that there was a raise in front of him, the button attempted to pull his bet back. The floor was called and it was ruled that the button had two options, either muck and sacrifice the 8,000 or call the 49,500.
When the floor walked away, the button attempted to move all in over the top, which the dealer didn't allow. With few options, the button called the bet. Surprisingly, the player in the big blind called the raise as well. When the flop came down 
, the big blind led out for 40,000 and the button simply said, "This is insane." He then mucked in frustration as the big blind showed 
. The all-in player showed 
and the live players ended up chopping the button's money.
If only he'd paid attention and saw the initial raise, things might have gone differently.