As Rocky noted earlier in this thread, it's a word game (and while it's funny, it's not that much of a joke).
I'm sure regular coffee is there, but it's called something else. Perhaps a coffee drinker here can comment on what the name for "regular plain coffee" is at Starbucks. I don't drink coffee (but I'm sure I have other bad habits).
You have a bad habit of not drinking coffee, especially at Starbucks!


