Here are some possible interpretation of the name that I came up with:
One meaning of "bash" is a party or celebration, and the 'f' could be creatively interpreted to represent a fun, fictional, fantasy.
In a programming context, "bash" is a Unix shell and command language. "fbash" could stand for "functional bash", implying a specialized or enhanced version of the Bash shell with functional programming features.
Finally, "fbash" can be interpreted as "facebook bash" or "facebook ash" by haters of facebook