cut card
I actually saw this happen at the Grand in Vegas in a shoe game.
Dealer was totally burned out, had worked two consecutive shifts due to some either bad planning or unexpected illness or whatever. She was asked to stay on and she did.
It became apparent that she was having problems, in that she once stood on a 16 and paid a 17 hand, she paid a 22 hand as though it had 21, etc. No one said anything, the "eye in the sky" people were also apparently burned out and the pit crew didn't notice either. All I did was to make sure I knew my total and the dealer's total so that I could correct mistakes such as my 7 card 20 vs her 6 card 19 she called a "push", etc...
On one specific hand, with 5 of 7 table slots in play, she dealt everyone's first card, and hers, then another pass around the table saw her second card turn up plain yellow (the cut/shuffle card). She seemed to ignore it, turned it over, and went to the player at first base with her dealer up card a piece of yellow plastic. Unbelievably, the player at first base, who had enough alcohol in him to survive overnight in the mountains with no clothes, hit a stiff hand. As play moved to me, not knowing how to bring this up without alerting the pit crew and causing the dealer some heat, I pulled out my trusty BS card. The pit boss noticed, walked over and said "You've played here off and on for several days, and seem to know your play pretty well, why are you looking at that card?" (He too did not notice that cut card as the dealer's up card yet). There was little I could say but "I didn't know what to do with a soft-16 vs a blank up card." He looked down, sputtered, and they voided the entire deal, even after the drunk had bet and busted. :)
The worn-out dealer was relieved pretty quickly, no idea what happened to her after that. Seems to me that she cost the casino some money as everyone corrects an incorrect payout if it is in the house's favor by error, but not if it is in the player's favor. But she also stayed on due to a dealer shortage, so it is hard to see how to blame her as the sole cause of the problem.
Back to the BS question, what do you do with a soft-16 vs a blank card? Double, hit or stand? :)
I was _so_ tempted to double, just for fun, but decided no, they will probably take the yellow cut card, pull another from the shoe, and there would be a good chance it would be a 10 as the count was fairly plus.
One of those truly strange events that you will probably encounter if you play long enough...
I have also seen one hand where the dealer hit the cut card, put it aside, and backed up one player too many and gave him a 3rd card that busted him. The player had a 10/6, the unsolicited 3rd card was a 10, of course the player tried to give back the 6, and 10 minutes of wasted time later the deal was voided and we started over.
This was good news to me as it apparently suggests that the eye in the sky doesn't tape everything going on. IE they didn't have the 3rd card (10) on the tape and could not prove/disprove anything. I wasn't going to say a word although as a counter I knew _exactly_ what had happened (which card came first) since I was counting around the table doing "twosies" as the second card was dealt. No point in really pissing someone off, you never know what will happen later.