It looked like the jet was passing a particularly nasty, smelly turd.
“The US president was denied the usual red carpet welcome and forced to go out of the ass of Air Force One, observers say” - https://www.theguardian.com/world/2016/sep/04/barack-obama-deliberately-snubbed-by-chinese-in-chaotic-arrival-at-g20
well if the plane stanks, it is..lol