The Big Gulp might have some new competition in the realm of giant beverages from an unlikely dark horse: Dunkin‘. Over the weekend, Dunkin’ customers in New Hampshire and Massachusetts began posting head-turning images of giant coffee buckets on the menu at their local stores. While some commenters doubted the veracity of these reports, a Dunkin’ spokesperson confirmed in an email to *Fast Company* that the donut chain is indeed testing out a 48-ounce collectible bucket at select stores after noticing buzz around coffee buckets taking off on social media. A “coffee bucket” is exactly what it sounds like: a giant iced latte served in a plastic container that looks more like a garden tool than a cup. The novelty beverage took off this summer and appears to have been sparked by several different small businesses, including Noctua Coffee in Missouri, Dulce Vida in Oklahoma, and Wicked Southern Coffee in Connecticut, all of which attracted thousands of views on social media.…