Or they run a chemical supply company, specializing in hydroxides.
California plate: HMNBIRD
At first I thought it was for HUMAN BIRD, but later I realized it must be for HUMMINGBIRD. Must be a hummingbird fan.
I saw a giant suv (Escalade?) with the plate Vicktum. Does it refer to the owner, which would be pathetic, or to the many bodies that can be stashed in the vehicle?
I saw one this morning PSEDCBA.
No clue, other than the last five letters are the first five of the alphabet in reverse order.
Last night I saw a truck with the license plate DRUMMR I presume the owner is a drummer in a band
MSTEACH
Might be a woman school teacher or a Microsoft-certified instructor.
STINKI
I don’t even want to guess
Today I saw XX5XX. Which would be pretty suggestive all by itself. 9 X’s is like 3 triple-X pornos all at once. Just how wild are these people?
But it was attached to a BMW X5 and that sorta neutered the message. Which may have been their idea all along. Perhaps it’s better to be a stealthy sex fiend than an openly advertising one.
This is my guess
Or a teacher with a master’s in science
A Lotus Emira, with California plates MY EMIRA.
I saw an ordinary car with ⎵L⎵⎵PITZ.
Maybe it’s somebody with the last name of “Pitz”; some googling shows there are such people although that spelling is not one I’ve ever encountered in person. “Pitt” or “Pitts”? Sure. “Pitz”? Nope.
But I prefer to think it’s Spanglish for “el pits” as in “this is the pits; it sux.” Who’s to say?
Someone that loves physics?
Or a fan of Breaking Bad?
I wonder if that guy’s wife has HRSNBRG on her car? 
I vaguely remember that when personalized plates became available in CA when I was a teen there was a brief fad for HIS xxx and HER xxx plates. I think I remember seeing a pic or in real life a pair of Corvettes in a driveway with HIS VET and HER VET. Back in the day CA plates only had room for 6 characters total with a mandatory central space between the two halves.
Wouldn’t that work better as 1ING W8?
Saw a Rolls Royce convertible with Illinois plate ROCK OH.
Maybe may they made their money in the quarry business in nearby Ohio.
Or Rocco is the driver’s nickname.
At first glance I thought it was ROCK ON. But it definitely wasn’t.
Unrelated, but comedian Jonathan Ross has a lisp and on the internet (podcast, twitter handle etc) he goes by “Wossy”.
That’ll be stuck in my head for the rest of the day.
I saw a HALF ORC today. I’m guessing it’s a D&D player who likes barbarians.
9927SPD
Here’s an example of why in California, you MUST go in to the DMV to order your personalized plate for correct spacing.
Really, this should say: 992 7SPD, with a space after the 992. When you order online in California you currently cannot insert a space if you want 7 characters. See here ➜ Special Interest License Plate ■
But when you go in to the DMV, the old paper application allows for 7 characters plus a half space.
Which is what I did for my plate. My current plate is not very imaginative. It’s on my Subaru Outback Wilderness (or, OBW), and it is simply something like (but not exactly): OUTBACK. Like this (again, not exactly):
As I said, it’s not very imaginative. I was in a bit of a rush when I ordered it. But I wanted something a little more obscure and that also paid homage to my last vehicle which was a Jeep. So I recently ordered something like (but not exactly): JEEP OBW. I needed the space after Jeep or else it would be JEEPOBW. Not good. It looks terrible without the space:
It should arrive in a few weeks.