[T.B. Yoits]

As a slang term, “304” is used as an alternative to the word “hoe.”

To add to that, "304" rose in popularity in order to avoid bot censors that would automatically remove online posts that included the words "hoe", "whore", or the like. (and would often ban those who posted such terms)

[JusPasenThru]

Thot is another circumlocution.