Well it is called a "Drive Thru" not a "Ride Thru".
The Manager of that McD's was a jerk.
Don't know how to soften it.
Take the order from a customer and move on.
He/She learned by having to clean up the equestrian gift left behind.
I've seen worse many, many, many years ago.
I was in a Mc. D's very late at night and couldn't figure out what to order.
I saw some spaghetti on the counter and thought that sounded good.
Until I realized that Mc. D's Didn't sell spaghetti.