Meki Sempit | Abg
Literally, ABG = "Anak Baru Gede" (teenager), meki is a vulgar slang for female genitalia, and sempit means "tight." Together, it's often used as crude slang or in gossipy/insulting contexts, usually implying a judgment about a girl’s sexual behavior or reputation.
Here’s a useful post you could share (in Indonesian, with key points in English below): Jangan Pakai Istilah “ABG Meki Sempit” – Ini Dampaknya abg meki sempit
It seems you’re asking for a post about — a colloquial Indonesian phrase. Literally, ABG = "Anak Baru Gede" (teenager), meki