Step-Sister's Best Friend Uses My Phone To Watch Porn. My Step-Sister's best friend recently asked me to borrow my phone so she could call her boyfriend. Of course, I let Karah use my phone why wouldn't I. I never thought she would be watching porn on my phone, Karah got me in a lot of trouble with my girlfriend. She thought it was me watching porn on my phone, but this whole time it was Karah. I guess Karah is a freak, now I wanna know how much of a fr...