A U.K. woman decided to take matters into her own hands when her local McDonald’s wouldn’t allow her to go through the drive-thru on a horse.

Christine McGrail was with her daughter Olivia and their horses, Dancer and Minnie, at the fast-food joint when they were turned away from the window. McGrail says she allowed Olivia to lead her pony into the restaurant to order their food, and that’s when all hell broke loose.

“Minnie likes McFlurrys. We’ve genuinely been served several times before and I didn’t think using he drive-through would be a problem,” McGrail said.

Minnie, apparently excited by the prospect of a treat, let loose with a volley of excrement in the middle of the restaurant and customers became understandably upset at the sight–and smell–of it as they were trying to eat. Managers called police, and McGrail was issued fines for taking the horse inside. Greater Manchester Police, Whitefield Division, issued a statement.

“On Saturday the 20th of July Police from Whitefield received a call from McDonald’s on Fountain Place regarding a woman on horse using the Drive Thru. The staff refused to serve the women due to company policy. The women then took the horse into the restaurant who ended up doing his business on the floor. The sight & smell of this caused obvious distress and upset to customers trying to eat, as well as staff members. Officers arrived at the location and woman was issued a Fixed Penalty notice for causing alarm & distress to other customers and staff.”

McDonald’s says they had to put a policy in place regarding horses in the drive-thru due to safety issues which might arise for customers if the animal got spooked by a car.