鬼のいぬまに洗濯
1
playing while the cat is away;taking a break while the boss is out;doing what one wants when one is (finally) alone;relaxing while the demon is out
See also:
命の洗濯 (いのちのせんたく)
Other forms
鬼の居ぬ間に洗濯 【おにのいぬまにせんたく】 (rarely used kanji form) · 鬼のいぬ間に洗濯 【おにのいぬまにせんたく】 (search-only kanji form)