whiskey plank
n.— «The whiskey plank, as it is called because sailors traditionally have a drink or ten after they finish planking a ship’s hull, was cut to fit by Teddy Huff, who has been working at the shipyard about five months.…When he put the final bolt in place, a cheer went up across the shipyard.» —“One last plank and a shot of whiskey make it real” by Brian Hicks Post and Courier (Charleston, South Carolina) July 22, 2006. (source: Double-Tongued Dictionary)
Further reading
Twice a day the River Thames recedes, revealing a muddy shoreline. Hobbyists known as mudlarks stroll the surface searching for objects that have found their way into the river over the centuries, everything from ancient Roman jewelry to modern...
Mary Beth in Greenville, South Carolina, wonders: Why do we say four-oh-nine for the number 409 instead of four-zero-nine or four-aught-nine? What are the rules for saying either zero or oh or aught or ought to indicate that arithmetical symbol...
In film production, the last shot of the day is traditionally known as the “martini shot” for similar reasons.