Two fingers up with palm inwards as an "up yours" gesture apparently derived from the endless wars with the French who would cut off the index and middle fingers of captured archers. The gesture was to shove two fingers up the French.
Little's changed in the succeeding few hundred years. Literally the symbol for Brexit.
Winston Churchill used the palm-out two fingers up gesture as V for Victory in WW2.
Do wonder if the tech diving gestures for counting 1 to 5 were adapted to palm out because of this British gesture symbolism.
Made famous by Steve McQueen in his iconic movie “Le Mans”.