A mustache cup is a type of drinking cup that features a specialized design to help keep the drinker's mustache dry. In some cases, it may also include a small tray to catch drips and prevent stains on clothing. However, there are a variety of other names for this unique type of cup, depending on the culture and time period. Some synonyms include "beard cup," "whisker cup," "moustache mug," "mousterian cup," and "beardie cup." Regardless of what it's called, the mustache cup has a rich history and continues to be valued by those who want to enjoy their hot beverages without having to worry about the impact on their facial hair.