你面无表情的嘴角像在嘲笑我的胡闹
[nĭ miàn wú biăo qíng de zuĭ jiăo xiàng zài cháo xiào wŏ de hú nào]
Your unexpressive mouth seems to laugh at my antics. It describes feeling rejected or dismissed by someone's cold or indifferent expression. There is also an underlying sense of frustration or embarrassment felt by the observer