Get/pull your finger out - Idioms by The Free Dictionary
get/pull your finger out
pull your finger out or
get your finger out BRITISH, INFORMAL
If you tell someone to pull their finger out or get their finger out, you are telling them rudely to start working harder or to start dealing with something. If Bexley Council had any sense they would pull their finger out and shut this place down. I have told them to get their fingers out and start winning games.
get (or pull) your finger out cease prevaricating and start to act. British informal
get/pull your ˈfinger out (British English, informal) used to tell somebody to start doing some work or making an effort: I wish the police would get their finger out and solve the crime! ♢ If you pull your finger out, we might finish on time.