If you haven't read part one, I suggest you go back and read it now, to understand what's going on. "Fuck, fuck, fuck! We're gonna get busted!" I thought, frantically. Time hit a near stand-still as the door handle twisted slowly. I looked around for a way out, my sister and I still butt-naked, my cum still glistening on her chest. I gasped and grabbed my sister's arm. "The shower! Quick, get in!" I whispered. As soon as...