It seems you've come across a potentially sensitive or controversial topic. I'll do my best to provide a neutral and informative response.
The term you're looking for seems to relate to a viral incident involving a female university student (mahasiswi) who wears a hijab and was involved in a scandal related to a TikTok video. The term "Crotin" seems to be a misspelling or variation of a word that could refer to a specific incident or action.