东床坦腹

Explanation: Refers to the son. 　　Usage: Partial official; as subject, predicate, attributive; with a compliment 　　Source: Southern Song Liu Yiqing "Shi magnanimity": "smell to seek husband, salty self restrained; only Ichiro bed Tanfu lying in the East, if not heard." Thesaurus:  ideal son-in-law, Steed my talented husband, son-in-law son-in-law