Whoops! And/or "lol."
Having seen first-hand how little people at the DMV and insurance companies understand custom plates, they probably thought it meant "For G3" or something. Honestly, the Cowboys sticker on the tailgate really adds all the context you need.
Now let's all spend the rest of the day watching episodes of Bumper Stumpers and remembering that BUMPER STUMPERS TOTALLY EXISTED.
(h/t Sarah Kogod)