you bet | you bet your boots | you bet your life Informal
Meaning: You can say "you bet", "you bet your boots" or "you bet your life" when you strongly agree with a statement or a suggestion, or to emphasise what you're saying.
- Fela Kuti said "Do you want to join my band?" and I said, "You bet I do!"
- You can bet your boots that the rent will go up in January. It always does.