get on the stick
Start working, as in I have to get on the stick and start preparing dinner. This synonym for get going or get busy alludes to getting a car going by manipulating the gearshift, or stick. [Slang; early 1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.