Its been a word for a while, but has gained popularity since then. The new term comes from the "Bop House" Instagram/TikTok where a group of girls all live in a mansion together. The majority of the girls do onlyfans for a living, making them a "bop". Also means that they will sleep with literally anyone.
A bop is a term used mostly for a female influencer that puts up content that's sexy and more on a adult pornographic style. Like only fans or their own little private video posting.
Example: yeah did you catch a girls post I found out that she's a Bop she was someone else to go to her OFs site for better stuff.