|1.||Diamond in the muff|
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.
Dogg: Yeaa son, she had a diamond in the muff.
Homey: Damn. I didn't see that comin'.