If someone would have seen me they might think I am crazy/weird/childish/etc. If I was a kid, they might think this kid is cheerful/imaginative/cute/etc. So different an assumption can be made from the same act. As we grow up we constantly add an anchor to ourselves restricting us from doing this and that, even the small silly but harmless things that puts a smile on our face.
Note: Used to run as fast as possible with the superman pose and feel the wind blowing at my face. Felt so good. Havent been running at top speed and feeling the air on my face for a very long time. Maybe this midterm break I will do it.