In theory, anyone can say "I never do anything stupid." However, in reality, it's highly unlikely for any individual to be completely free from making mistakes or doing something that could be considered foolish. Human beings are fallible, and everyone is bound to make errors or poor decisions at some point in their lives.
It's essential to recognize that making mistakes and acknowledging them is a natural part of being human. It allows us to learn and grow from our experiences. Embracing our imperfections can lead to personal development and self-improvement. Claiming to never do anything stupid might not be an accurate or helpful perspective, as it denies the learning opportunities that come from acknowledging our mistakes.