I have never mentioned this to anyone, not even YOU, but I actually do this silly little flourish now and then when I'm typing. Usually it's when I'm typing something long and involved for work, like a transcription of a recorded statement, and I've just completed something very long and done it excellently well and fast. I do this sort of lifting up of my hands off the keyboard just a little... I can't even reproduce it on purpose, now that I'm thinking about it, because it just kind of comes to me to do it sometimes but it only comes when I'm really on a roll. But I'm always aware of it when I'm doing it.