It seems like you’re referencing a phrase or a quote, possibly from a book, movie, or a particular cultural context. The phrase “A bet’s a bet” is a common English expression that means once a bet is made, it should be honored, regardless of the outcome. It emphasizes the importance of keeping one’s word or commitment, even if the result is not favorable to the person who made the bet.

The addition of “Xev” could be a name or a nickname, suggesting that this phrase is associated with a character or a person named Xev. If you’re looking for information on a specific work or context where this phrase is used, please provide more details so I can give you a more accurate response.