Quite simply, the wearer deals in or smokes weed, and or drugs...usually displayed by a dealer.
You mean road rage? It is very likely that the biker will be chasing after you for insulting at the biker.
If you mean the number 13, it is ʻUmi kūmākolu.
Biker Girls Born to Be Wild - 2004 TV was released on: USA: 13 May 2004
13 means that the number can be rewritten as 13/1.
Fear of the number 13. Some people think 13 is an unlucky number, and will avoid anything to do with 13.
Biker Build-Off - 2004 Matt Hotch vs- Roger Goldammer 5-13 was released on: USA: 30 October 2006
Biker Mice from Mars - 1993 Once Upon a Time on Mars III 3-13 was released on: USA: 24 February 1996
the number 13 can refer to marijuana, don't think bikers are into that tho!
If you mean to ask what element has an atomic number of 13, then the answer is aluminum (Al).
It is the fear of the number 13.
It is the fear of the number '13'.