Who is B?

[Satire]

At one point, DA was frequently using the internet slang term "tho", a shorten mispelled version of the word "though", much to the chagrin of Cosh, who was prompted to make a topic about it confronting the matter which caused DA to move onto an even shorter term of a mysterious word: B.

Happy birthday B!

beat his ass up B

Nah b

But then the questions arise: Who is B? What does B stand for? Why specifically the letter "B"? Is it some kind of insult when he refers to the many members of this forum as "B"?

In my search to find the meaning of the term, I decided to attempt to search DA's posts for the first couple times he used it, looking for an origin of sorts. But then this occured:

Cure our curiosity, DA, who is B? We're waiting.

[Devil'sAdvocate]

you dont know tho?

B is bro,simple as that.

[Sam.]

boobs/bra