While walking with your toes flared out does not bring an end to the world, over time, it can lead to some pretty complicated issues in the ankle, knee, and hip. Think about the joints craving alignment and never being able to realize the position. The reason why you (or your friend) walks like a duck can come from a variety of reasons.
I shot this video to basically send a PSA out that, if you do happen to walk in this manner, you should schedule a visit with your PT to see if we can address a range-of-motion restriction in the ankle or poor motor pattern from the hip. Let’s try to be as preventative as possible!