Is it normal that i constantly rub my fingers together?

Hello is it normal community, I was wondering if it was normal for me to constantly rub my index finger and thumb together. I do it for both hands, but mostly with my right hand, but never at the same time. In my head it feels like I'm getting them cleaner because I can feel specks (of dirt or skin? Idk) coming off, but when I think back to before I didn't do this (just a year ago) my hands felt/looked clean, but now by the end of the day my fingertips are sensitive and blackish. This makes me want to rub them more, but once the black is there is keeps coming no matter how many times I rub them . I've also noticed the rate and force at which I do this is proportional to the amount of oil I feel on my fingertips. Even as I write this, it's taken me several minutes longer than it should have because I pause to rub them together. Clearly, this is not normal, so my question is more related to how crazy it is. On a scale of 1-10, how likely would you be to call me out if I was doing this while we were having conversation?