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2.
A sorority girl who is the mentor of a new sorority (statistic) member. New members zealously love their "big sis", and they usually proclaim their love by window-chalking "I LUV MY BIG SIS!!!" all over their car.
New sorority girl: "I love my big sis!! I love her, I love her, I love her, I love her, I love her..."

New sorority girl's boyfriend: "Uhhh..."
by jvarna5 January 28, 2008
17 4
 
1.
The Secretary of Homeland Security -- Janet Napolitano.

A reference to George Orwell’s 1984 ( Big Brother ).
The biggest threat to our freedoms isn't Islamist or domestic terrorists -- it's the Department of Homeland Security and Big Sis!
by Alohacop November 27, 2010
18 2
 
3.
well buggered beef attached to an eski lid and thrown into the sea as shark bait, often found washed up on bondi beach asking british backpakers if they want a job
hey man we better thow some big si out there before those white pointers steal all the waiters cloths
by pejax April 28, 2003
1 1
 
4.
hugh cans
mmmmmmmmmmmmmmmmmmmmm tiggle bities
8 19