A: I overheard our neighbor quarrel with her husband. What’s up?

B: It seems he took the Fifth when she asked him where he’d spent the night.

Note: “Take, or plead the Fifth,” refers to the Fifth Amendment of the U.S. Constitution, which says its citizens cannot be required to give testimony that could be used against them in a court of law. In regular conversation, it is used as a metaphor, often lighthearted, for a refusal to answer, commit to, or take action on something, as doing so might reveal guilt or be harmful to one’s self-interest.