9. 如果有人和你一起笑，那么他們可能喜歡你

If someone is receptive to your humor, they're likely interested in you.
如果有人對你的幽默很買賬，那么他們可能對你感興趣。

Evolutionary psychologists say that humor - and positive reception to humor - play a pivotal role in human development. They serve as a way of signaling a desire for a relationship, be it platonic or romantic.
進化心理學家稱，幽默以及對幽默的積極反應在人類的發展中發揮了至關重要的作用。它們能傳達渴求與對方建立關系的信號，不論是柏拉圖式關系，還是愛欲關系。