I don't know about you, but when I take advantage of a Starbucks drive-thru to buy a quick coffee in the morning (actually, an iced coconut milk mocha macchiato to be exact), I'm in my car.

However, when Aspen Cline -- an Arizona teenager celebrating her birthday -- decided to take her horse Scout through the Anthem, Arizona Starbucks drive-thru she was quickly shut down by the barista who refused to take her order.

Aspen was inspired by videos she had seen online of other people riding their horses through Starbucks drive-thrus, and she figured that there would be no problem. However, once the barista got a look at Aspen's ride, she was turned away. Says Aspen, "We weren't given any reason, just 'We can't take your order.' Me and my friend were going to get Frappuccinos for us and a cup of whipped cream for the horses."

When a reporter at a local television news station asked Starbucks for comment, the reporter was told that official Starbucks policy limits drive-thrus to cars only. No horses, no pedestrians. This according to the Starbucks rep is to ensure the safety of the animal, the rider, and employees.

Said Aspen's mom, Tandy Cline, "We support Starbucks because they're very accepting. So we were kind of disappointed we got thrown to the side from such a great company."

For its part, the Anthem Starbucks says that if given some advance notice next time, they'll be happy to work something out for Aspen. I certainly hope that's the case.