How did you keep from getting out of the car? 10 years ago I went thru the local drive thru at McD's to order my daughter a nugget happy meal. When I got the meal, I checked - it was a hamburger. I handed it back and said this is supposed to be nuggets. The girl in the window started yelling, saying you ordered a burger. I said my child doesn't eat burgers, I ordered nuggets. She then said F Off and slammed the window shut. I put my car in park in the drive-thru and went into the restaurant and demanded to see the mgr. I told the manager what happened and what the girl screamed. She was fired on the spot and I did not feel one ounce of pity. My DD was only about 4 at the time and really didn't need to hear or see that.
Oh, and I do tip the Sonic people here.