Do you ever buy fast food and they completely screw up the order?

Today I was in a hurry, so I went through the KFC drive through. I only had like 15 minutes of lunch left so I just grabbed the bag and sped off so I could park and eat. I ordered some sort of BBQ sandwich thing from them that cost like $5 but they gave me one of those little $1 things instead. I didn't bother to check before leaving because I was in such a hurry. And they still charged me for the $5 thing. Arg.

So has anything similar happened to you. Share your fast food experiences with me, my fellow fatty Americans.