take five—(coll.) take a short rest period:
- Hey, Bob. I’m tired. Can we take five?
take the fifth—
1. (U.S. legal) refuse to testify appealing to the Fifth Amendment of the Constitution:
- Accused criminals can “take the fifth” without fear of reprisal.
2. (coll.) decline to answer a question:
- I’ll take the fifth on that one. Ask Fred.
See also: give someone five / give someone high five.