Busman's holidays is a phrase that means taking a break from the usual work routine by engaging in the same activity as work. There are many synonyms for busman's holidays, including practice what one preaches, cook's holiday, doctoring the doctor, play at work, and the tailor's holiday. Each of these phrases describes the concept of taking a break from the usual work routine while still engaging in work-related activities. Whether it's a doctor learning from another doctor or a tailor making clothes for their family members, the idea is to switch things up and engage in work in a different way. These phrases all capture the essence of taking a refreshing break while still maintaining one's connection to their work.