You have spied on your sister in the past when she's needed to pee and when she was masturbating. It's been about a year and a half since you've done it so she wouldn't expect you to do it again. This time you got really sneaky. Before you left the house, you placed a hidden camera where she wouldn't easily find it and you locked her door so she couldn't get out. She was napping. By the time she wakes up from her nap that kombucha she had earlier is ready to be pissed out. She tries to leave her room but she finds its locked. She tries opening it but its no use. She calls mom & dad, then you. No one will be home for hours so she has to wait. She becomes more desperate by the minute. She decides to masturbate to take her mind off the feeling of having a full bladder but it only makes her wanna pee more. She struggles and dances. She can't pee on the carpet and there's no cups to pee in either. She can't hold it much longer. Her bladder begins to leak. She tries to hold it but the pee keeps dribbling out. As she leaks, she tries to find something to pee in. She finds a half burned candle. Before she can place it under her pussy, she starts to gush all over the carpet. Her stream hisses as she relieves herself. Her carpet is soaked. She tries to find something to dry off with when she discovered the camera you hid. She is furious. She can't believe she was so naive to think her perverted brother wouldn't do this again