Last night, I played some Hold ‘Em, and went all-in with top pair (kings), holding AK offsuit. The problem was that two other players had AK offsuit, as well! One of them caught a K-high flush on the river, and the other caught the A-high flush on the river. Ouch. Of course, the pot was a monster.
Probability of (at least) 3 players in an 8-handed game having AK (suited or unsuited) = .000029% (1 in 3,465, 531 hands).
Probability of (at least) 3 players in an 8-handed game having AK offsuit = .000013% (1 in 7,921,215 hands).
So, that was probably a once-in-a-lifetime hand. Too bad I got busted on it.