An individual should never to bet to "chop", whatever that means, especially when the normal and regular meaning is that an individual will "chop" off he genitals if he loses his bet.
When I was in school, a physics teacher told the class "If so and so goes on to university, he will chop off his head."
That individual, not only graduated with a second upper honours bachelor's degree, but achieved a Ph.D. and became dean or vice dean at NUS.