He's a very strange induvidual and I wouldn't be surprised if that was the real meaning of the infamous BEATHER.
But we will never know for sure. Only he himself could explain what the beather stands for. Unfortunately, like all these excentric induviduals (including our friend Adam), crni09 never speaks and never aswers any questions. All he does is spawn generic, repetive, gramatically incorrect and completely pointless comments that start with single assumtion and ends with a row of completely random model and brand names. Very often but not always, there's the magical word "BEATHER" in between.
Here's an example: "this car is faster of the boxster s" (first part - single assumption) "cayman s,nissan 370z" (second part - random names).
Another one "good car but the racing rivals is beather :mazda rx8,audi tt,merc slk..."