The phrase "diarrhea of the mouth" refers to the tendency to speak excessively or uncontrollably, particularly with little tact or consideration for others. Some common synonyms for this phrase include "verbal diarrhea," "mouth diarrhea," "diarrhea of the tongue," or simply "rambling." Other related phrases might include "flapping one's gums," "talking up a storm," or "yapping away." Regardless of the terminology, it is generally considered impolite or irritating to speak without pause or awareness of social cues, making it important to strive for mindful, measured communication in all settings.