A Seydi B is a girl who has very bad band kid humor and has no friends. Seydi B girls usually think they are cool and mysterious but in reality they are just weird and annoying. They often use tiktok slang and feel as though they are much better and hotter than everyone else. Seydi B girls think they pull but they usually end up with mentally unstable boyfriends, but on a rare occasion end up with a perfect man who is the whole package, no in between.
Edson: Yo bro look, that girl has her shoes off in class, she smells like stinky cheese!
Leo: I know dude, shes such a Seydi B