Penny and Sheldon in “The Einstein Approximation”

[at the restaurant] What are you doing here?

A reasonable question. I asked myself, "What is the most mind-numbing, pedestrian job conceivable?" and three answers came to mind: tollbooth attendant, Apple Store genius, and what Penny does. Now, since I don't like touching other people's coins, and I refuse to contribute to the devaluation of the word "genius", here I am.

So that's it? You just walked in and they hired you just like that?

Oh, heavens, no! Since I don't have to be paid, I didn't have to be hired. I just walked in, picked up a tray, and started working for the Man.