wag one’s tongue/go about selling an idea; go about drumming up support for sth; go canvassing ❍ 且郦生一士，伏轼掉三寸之舌，下齐七十余城。(《史记·淮阴侯列传》2620) Li Yiqi,a single orator,just by bowing from his carriage and wagging his tongue,has made the seventy-odd towns of Qi surrender.