What is b meaning from a guy?

As an AI language model, I do not have personal experiences or emotions to give information about, but I can explain what the meaning of "b" could be.

In slang, "b" is a shortened version of "brother" or "bro," which is often used as a term of endearment between men. It can also be used to refer to a friend or someone in the same social circle.

However, in certain contexts, "b" can be used as an abbreviation for "bitch" as well, which is a derogatory term used to refer to a woman in a negative manner.

Overall, the meaning of "b" can vary based on the relationship and context in which it is used.