看你后面有飞机瞧你上面有飞碟
[kàn nĭ hòu miàn yŏu fēi jī qiáo nĭ shàng miàn yŏu fēi dié]
'Look behind you; there's an airplane. Look up at you; there's a UFO'. This playful expression humorously points at someone in a teasing manner or describes someone who is always surprised by extraordinary things happening around them.