This is bad, I know.
At a coffeehouse I frequent in my neighborhood, there are some regulars I'm almost guaranteed to see here. I've never talked to them, and don't know anything about them, but I still have pet names for them.
Hong Kong Fooey. A white guy whose facial hair resembles a 1950s-era stereotypical image of a wise Chinese man. For some reason, he has a large clump of hair tied up in a ball on top of his head.
The Guru. With unkempt long hair and a beard, this guy is a dead ringer for Richard Stallman, right down to the questionable hygiene. Always reading a book, or in a deep philosophical discussion with a few other people. If he's got a computer at home, it's probably running some Linux distro.
The Amazon Pen Goddess. Probably a trophy wife in the recent past. Early 40s, 5' 10", 125 pounds, long blond hair, and a bust that is just on the borderline of "real or fake?" Usually wearing high heeled boots and an outfit that probably set her back a couple thousand bucks at one of the nearby boutiques. She always manages to get one of the rare, prized tables with a nearby plug, where she'll set up a lamp and doodle for hours.
Little Red Haired Girl. Short, somewhat curvy, curly red-haired woman who always wears tight sweaters. She's so adorable, you just want to hug her.
The Cat Women. Not to be confused with cat hoarders, these are the women what work in a nearby salon, all of which are gorgeous, and all of which wear black catsuit-like outfits. A blond woman who drops in for coffee every hour from the salon is Queen of the Cat Women.
The Compass F****rs. Any one of the many, many yoga moms who are more-or-less indistinguishable; late 20s to early 30s, 5' 5" to 5' 6", slender, blond hair pulled through a baseball cap, and buttcrack-hugging black yoga pants. I call them Compass F****rs because they all wear North Face jackets - so much North Face, a compass won't work here.
Do you find yourself giving pet names to regulars at a coffee house, restaurant, or some other third place?