To wag one's tongue; used to describe spreading rumors, inciting people, or stirring up trouble with speech. It can also describe showing off one's eloquence.

To wag one's tongue like the reed of a wind instrument; describes using smooth talk, honeyed words, or sophistry to agitate, persuade, or deceive.

to wag one's tongue and shake one's lips; to spread rumors or engage in inflammatory talk to incite discord