All the Hispanics from Mexico at my present and previous parishes do this.
I never have, but I remember lots of kids in Catholic school did.
Then there are the thumb-kissersā¦the people that kiss their fingertips at the end of the Sign of the Cross as if there were a crucifix in it.
People have a lot of different small "tā traditions.
I myself, cross myself at the end of the Confiteor. (like a small absolution). People seem to have stopped doing this, but growing up, everyone did. Iāve retained it.
People nowadays mimic the presiderās gestures as well.

I had a pastor tell me that the three crosses before the Gospel on the head, heart and lips, was only for the person proclaiming the Gospel, but that people just copy it. But itās universal. Iād be interested to know if thatās how it came about. Anybody know? We didnāt cover that in our theology coursework.