What does it mean to order a regular coffee at dunkin' donuts?

Ordering a regular coffee at Dunkin' Donuts typically refers to a medium-sized cup of their standard brewed coffee, which is usually around 14-16 ounces. This coffee is freshly brewed and can be customized with cream, sugar, or other flavorings based on the customer's preferences. It is a popular choice for those looking for a simple and classic coffee option at the chain.