Spank : v. tr. Pounding while hitting the buttocks, spanking (someone).
To spank your wine is to hold the wine. Old colloquialism defined by Le Grand French Vocabulary of 1769.
Quote from the writer and playwright Jean-François Regnard (1655-1709): « So, if someone drinks a lot without being bothered, we say that he spank his wine well”.
He tells his heroine to The Serenade that« she spanks her Champagne wine wonderfully, and at the end of the meal it becomes very tender… ”