两全其美

liǎngquánqíměi

[eat one's cake and have it; satisfy both sides; satisfy rival claims; to the satisfaction of both parties] 做事照顾到双方, 成全两个方面, 使两方都满意

与他个两全其美, 出去便出去, 还与他肚里生下一个根儿。 --《西游记》