Mbaisi. (pronounced as mby -cey.)
/phonetic/1.
Girls/ women.
The word 'mbaisi' is actually the word 'simbi' (another slang term for girls) flipped backwards and then pronounced differently. The eee sound in the letter 'i' is forgone for a more English pronunciation of the letter. Saying words backwards was a thing back in the day called Chibende. (bending words)
"Kune mbaisi here? "
Translation: "Will there be girls?"