The Mafren is basically when someone ignores the chat even when people are addressing them cause they think they'll be accused of being a bitch (cause they are a bitch)
Crislee: Sup Denan, Do you have cigarettes?
Denan: (Proceeds to ignore the question)
Crislee: Man! You're such a bitch for doing The Mafren on me.
Epitome of beauty. Rare and must be treasured dearly. You wouldn’t want to mess with her because she is as fierce as a lion and as smart as Marilyn vos Savant.