Any type of
female genital piercing/vaginal piercing. While not
common among females, freaky types may be more likely to have these. In any case it is a rarity, not likely to be predicted, thus it's relation to a diamond in the
rough.
Homey: Yo, that
chick you brought home last night was cute as fuck...
Dogg: Yea bro, you never woulda guessed it, she was freaky as hell.
Homey: Nahhh.
Dogg: Yeaa son, she had a diamond in the
muff.
Homey: Damn. I didn't
see that comin'.