mail it in
v. phr.— «They jumped on us and never got off.…We could have just mailed it in tonight. We didn’t have the intensity we had at home and we never got into it.» —“Malones and Stockton Too Jazzy for Bullets” by David Aldridge Washington Post Dec. 4, 1990. (source: Double-Tongued Dictionary)
Further reading
Katie in Everett, Washington, is curious about the expression If ifs and ands were pots and pans, there’d be no need for tinkers. What is a tinker? She heard this phrase on the television series The Gilded Age, in response to a character who...