If you’re an attentive reader of this site, you know that people are always bringing inappropriate things to fast-food drive-thrus, hoping to get served. Mobility scooters. Snakes. Even pedestrians have tried and failed to acquire food. But when Darcy wandered up to the drive-thru window at a Colorado McDonald’s on foot, employees didn’t just wearily tell her to go inside the restaurant to order like all of the other pedestrians. That’s because Darcy is a dairy cow.