Rule #13 to Surviving Sisterhood

Rule #13 to Surviving Sisterhood is never mess with your sister’s homework. One time when I was mad at my sister, so I took her AP Bio lab. I ripped the pages out of the staple one by one. Then when she told me to pick them up I crumpled them up into balls and threw them at her. My sister and I go to the same school. She is in AP Bio, and I am in Honors Bio, so we have the same teacher. When our teacher asked why her lab was wrinkled, my sister told her everything. Later that day our teacher called me out of the whole class. Needless to say it was so embarrassing.

Joke About Sisters

A man and a woman who have never met before find themselves in the same sleeping carriage of a train. After the initial embarrassment, they both manage to get to sleep; the woman on the top bunk, the man on the lower. 
In the middle of the night the woman leans over and says, "I'm sorry to bother you, but I'm awfully cold and I was wondering if you could possibly pass me another blanket." 
The man leans out and with a glint in his eye said "I've got a better idea ... let's pretend we're siblings,” 
"Why not," giggles the woman. 
"Good," he replies. "Get your own blanket."