busman's holiday

busman's holiday idiom
Free time spent in much the same pursuit as one's work. For example, Weather permitting, the lifeguard spent all her days off at the beach—a real busman's holiday. The term alludes to a bus driver spending his day off taking a long bus ride. [Late 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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