Patting the fuel tank...that's quite old school
I always give both my bikes a loving pat regardless of which one I've just ridden and when I see something parked that I like it will always get a pat
Years back when my father had the haulage business I used to watch the guy's park up on a Saturday afternoon and to a man each one would give his truck a pat
My ole dad always said it was something he liked to see and it told you a lot about the person
Ride safe my friends..regards to you all
Ray