Ante Up magazine has a section that I like titled "Call The Floor." Here's a situation described in the November issue:
At a monthly no-limit tournament, a few guys limped, the small blind (with K-K) raised five times the big blind. Everyone folded but the guy on the button. The flop came 10-6-3. The small blind bet and the button went all-in. After tanking for a few minutes, the small blind called.
The button said, "you got me," and didn't show his cards, though they were still in fron of him.
The small blind threw his cards into the muck face down.
The button said, "You mucked, I win."
The small blind said, "You conceded; I win," and turned over the K-K from the muck.
What do you think? I'll give the answer from the magazine after readers say in the comments section what they believe should happen.
UPDATE: I've given the "answer" from the magazine. See comments.