This is a bit of an alt version of chapter 2 from weavillian's "bottoms up"
Lincoln couldn't believe what he was seeing, Bobby was abusing his sister, without a second thought he busted the vent cover off its hinges and was in the room face to face with the ditzy young man "get your hands off my sister", Lincoln roared as he charged at the latino with blinding speed and threw him to the ground. "Lori are you ok?", the little loud asked as he carefully checked his sister for bruises, rather than reprimand him for disturbing the couples obvious sexual play, his big sister simply hugged him and thanked him for saving her. Seeing Lincoln turn back to her still prone boyfriend with rage filled eyes, Lori quickly but gently assured him that she would take care of Bobby and sent him on his way with a kiss. She helped her boyfriend to his feet, "guess you got schooled huh professor?" "c c class dismissed"