I think about 20 years ago, maybe less, Bush Sr. was riding past a group of protestors in some foreign country and he shot that “screw you” back of the hand “V” sign at them, which he knew would piss them off.
I only know it as the victory sign. Since the brat’s family is from the Sudan - long under British rule - I’m assuming he likes to flash the victory sign (caliphate coming!) to us infidels. The other two are flashing the peace sign.