What is Batminx?
1.
A girl who likes to fuck like a nympho, but is proper otherwise.
That pastor's daughter is a batminx.
See
2.
A girl that seems proper and polite during the day in public, but is a slut at night in private. to quote a famous song, "she's a lady in the streets but a freak in the bed"
that pastor's daughter is such a batminx.
See