God, I love Betty and Taz. 
Also, just to clear this up, for those of you trying to justify or defend her unsanitary behavior... the donuts were not sitting out there in violation of the health code. An associate had brought them up to the counter because Ariana wanted to look at them. They did the same with another tray and that's when she stated they were "so gross" and that she "hated America."
The donut licking was done as a stone-cold sober dare and she did not end up purchasing those donuts. The donuts were purchased later on in the day by several different customers, who were warned about Ariana's actions the next day, once the owner had seen the videotape, but it was too late. They had already consumed the donuts.
This is much more about donuts and dares and being immaturity. This is about a basic humanistic expectation of respect & decency. Something this brat doesn't have. Her actions were not foolish or silly... They were malicious. How the hell do I know what you're carrying in your saliva? Ever heard of Mono?
It seems to me that most of the people pushing back at me have not taken the time to actually find out the full story. Do some research before you speak on such an issue. Jesus.