Didn't he say "Iocane powder, I'd bet my life on it"? I ask because my automatic reaction whenever anybody says they'd bet their life on something is to think some variant of: "Your terms are acceptable to me."

__________________
[Dr. Horrible]___________________________[Penny]
Listen close to everybody's heart________And you believe there's good in everybody's heart
And hear that breaking sound_____________Keep it safe and sound
Hopes and dreams are shattering apart____With hope you can do your part
And crashing to the ground_______________To turn a life around