The Non Descript Coffee Shop is a coffee shop. It first appeared in Not Great Double Date.
Rigby has written a script for a backstory on their fake relationship, since Margaret is shown to be bad at lying. Rigby at first is angry that he is lying to Mordecai, but accepts since it could keep him happy. Margaret complements his writing but states that it is too complicated (since the backstory is later shown to involve abnormal events like those that Mordecai and Rigby always go through), although Del heavily likes it.