I'm thinking of walking into the upscale hotel lobby wearing a house robe. Would you like that?
That sounds like you're going to scare people. Is that what you really plan to do?
No, I just think it would be funny.
It is good to wear proper clothing when going out in public. People might think you are crazy and call the police on you if you expose yourself on the street.
What if I was wearing a mariachi outfit, would it still be disrespectful?
Yes, because unless you are Mexican it can be considered cultural appropriation since you are just using it as a costume, and not respectfully as an actual artist. Why not just wear a hot dog suit, which is funny and non-offensive?