I too was confused and unfortunately looked it up...
" Throughout the 2020s, 304 has become an increasingly popular slang term and form of
algospeak, used to type or say "hoe" without getting dinged by moderators.
The term is particularly popular in so-called "alpha male" content and clips of people like
Andrew Tate and
Sneako discussing their opinions on women. On TikTok, it's frequently used to directly reference sex workers without fear of TikTok's moderation striking down the video. This includes videos of prostitutes, as well as pimps, discussing their work."