七英俊《成何体统》Episode 14 [Vocabulary]

舍命陪君子

shěmìng péi jūnzǐ

I would throw in my lot with you, sir, at the risk of my own life

[said jocularly when agreeing to join someone in an activity]

舍命 shěmìng to risk one's life

陪 péi to accompany; to keep somebody company; to assist; old variant of 賠

君子 jūnzǐ nobleman; person of noble character