Despite what may appear obvious, the title “Phatty” has nothing to do with joints and weed. It is, in fact, a word-play on Turkish name Fatih (no, not “faith”) which is pronounced pretty much the same.
At the end of the original run of the_city all the characters went their separate ways. In the series two some of them came back. This was the sketch for the first meeting between the long-lost friends.