like a headless chicken [British, American]if you do something like a headless chicken, you do it very quickly and without thinking carefully about what you are doing.
I've got so much work to do - I've been running around like a headless chicken all week. (usually in continuous tenses)
He was racing around like a chicken with its head cut off trying to do the work of two people. [TahlilGaran] English Idioms Dictionary ▲