When the four girls go out for Drag Queen BINGO, Samantha yelled N-23, suggesting that that's what she needed to win. When N-33 was called out, Samantha again yelled for N-23. Now if you've played BINGO, you'd know that there are 75 numbers in all (1-75) with each letter representing 15 numbers, i.e, B would have #1-15, I 16-30, N 31-45, G 46-60, O 61-75, which means that #23 falls under the letter I and no BINGO card would ever have N-23.