1
general::
Phrase(s): laugh out of the other side of one’s face [and] laugh out of the other side of one’s mouth
Fig. to be forced to take a different or opposite view of something humbly; to sing a different tune. • When you get the kind of punishment you deserve, you’ll laugh out of the other side of your face. • Phil played a dirty trick on me, but he’ll be laughing out of the other side of his mouth when I get through with him.
McGrawhill's American Idioms And Phrasal Verbs