It is actually said (though may be urban legend) that the sticking two fingers up ina fuck you gesture originated from fact french would cut english archers fingers off if captured ( as English archers were such a boon to the army) so Brits would line up and taunt french that they all still had fingers to pull the bow.
That may be what is depicted here, flicking the V
Set the automatic timeout for admin accounts to 15 minutes....meaning that process that may take an hour or so you have to wiggle the mouse or it logs out ..not locks.... logs out
From installs to copying log files, to moving data to reassigning owner of data to the service account.