pull/get your finger out
From Longman Dictionary of Contemporary Englishpull/get your finger outpull/get your finger outBritish English informalWORK HARD used to tell someone to work harder → fingerExamples from the Corpuspull/get your finger out• You could easily finish your essay if you just sit down and pull your finger out!• So, come on shoe companies, pull your finger out, deliver the goods you advertise.