Many people are completely unaware of how others see them. We live with our bodies and forget that what's normal to us because it's ours, is 'different' to others. Not sure if I'm 'splainin that clearly, but if you've ever visited people of walmart - you'll see a gross example - gross meaning huuuuuge and widespread in that so many people seem to have magic mirrors at home that tell them one thing, but when they go out in public, we see the what's behind the curtain.
Hey, sometimes I forget that I'm *cough* over 50, but it's ragingly apparent to those younger than me.
I agree so much. I think it's well within reason that even a self-conscious person could be fairly oblivious to the fact that they have a weird gait. A person could feel very disguised in head-to-toe black tactical gear thinking they covered every base when it came to clues to identity but completely forget that their walk is distinctive enough to be a clue. The all-black costume also makes the waddle even more obvious and more pronounced than if the murderer was in street clothes.