First a breif explanation.
My brother in law and I have some years ago nickenamed
my wife and her 4 sisters "The Psycho Sisters".
If your not married to one. Or if you've never been to a family function with them. You probably wouldnt understand.
But I found this little Video that best represents them and decided to share it with them
The Email is as follows
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Smile ladies, Your on Candid Camera
PSYCO SISTERS (Though I gotta admit he deserved this one)