You ratted out your little step-sister, telling your parents how she's literally doing the nasty with her new boyfriend and she just knows she's gonna be grounded for life - and that simply can't happen. Not now. Not this weekend! Her best friend is having a party and her new flame is about to make them official! She pries it out of you and you cave, it WAS you! You ratted her out! Now, you have 1 of 2 choices to make - either you tell your parents that you lied about her fucking the new boyfriend or... well, you get to be your little step-sister's lunch. The choice is yours.