hop to it
To start doing some task or activity. Come on, hop to it—this room needs to be completely clean in an hour!
Hop to it!
Inf. Get started right now! Bill: I have to get these things stacked up before I go home. Bob: Then hop to it! You won't get it done standing around here talking. "Hurry up! Hop to it!" urged Bill. "We've got to get this done!"
hop to it
Begin to do something quickly and energetically, as in We've got to hop to it and get our shopping done. [Colloquial; first half of 1900s]
hop to it
To begin an activity or a task quickly and energetically.