It could hardly have been the result of some stupid bet or a test of his courage.

People who make stupid bets deserve to starve.

Why had he agreed to that stupid bet?

"I'm so sorry about that stupid bet."

Mallory cursed the stupid bet he had made.

There is some satisfaction in knowing that your losing bet was not a stupid bet.

"Yes, well, he and Apollo won that stupid bet, so that means I have to tell you."

How had she let herself walk into a stupid bet with Alex?

Don't gamble with your life; it's a stupid bet.

I know the marquess thought up that stupid bet on the spur of the moment.