Obscene gestures may run in the Bush family, When his father, as US President, toured Australia, he was riding around in an open car, waving to the crowds. At one point, he waved 2 fingers at them, thinking he was giving a "V for Victory" sign, but unfortunately did it with the back of his hand, not the palm, to the crowd. I heard the crowd responded enthusiastically with the same gesture. I'm not sure if anyone ever told Bush senior.