No I don't do either of what you said, but I had friends/classmates who would do it everyday. I would advise you not to do any of them, cause it doesn't look that fine. If you press your eyes, they will gradually shrink and that also affects your look. I had an accident when I was one-and-a-half years old and due to an operation my eyes are not as they were before that accident. That's why I have to put on glasses when I go out because it doesn't really look well. I had beautiful eyes before that bloody accident, according to what my parents and brother told me. Remember that presentability is absolutely crutial in the sighted world. You might not care but they do. Same goes for rocking.
I think the primary reason why this comes to exist is due to the lack of activity the brain has while we are growing. The brain has a lot of capability that is not being utilised which would otherwise be filled if we could get information from our eyes. So if you see a person, you get thrice or more information than you get from hearing. So the colour of his hair, eyes, clothes, glasses, if he is smiling or not, other expressions of the face, and so much more that I'm not including. We can't have this information and the brain will find some way, I believe, to make up for it. I personally had this internal thinking or imagination or fantasising or let's put it something like making up imaginary scenes with real people that I would meet in my daily life. Or I would make up or elaborate on what happened one day with someone. So if I had a piece of information, my brain could work on it for hours when I had nothing to do or when I went to sleep. This skill my brain developed, which I think is the case with other blind people as well, still affects me to this day although at a lower degree. And that, I tell you, has had an unbelievable, deciding, whatever effect in my lifestyle and my relationships. Yeah yeah, blindness sucks, particularly since I or whatever supernatural being that brought me to this world were not responsible for it.