Yesterday I was at Madison's house. We went to her little sisters room to mess it with it since we were alone. We opened her underwear drawer and stole all her panties. Then we went to Madison's little brothers home and stole all his tighty wightys. Then we put all of the panties in her brothers drawer and all the TWs in her sisters drawer. That night everyone came home and went to sleep, I stayed over and slept on Madison's floor. The next morning Madison and I woke up her sister and told her to change and come to Madison's room, we told her brother the same thing. About 5 minutes later all four of us were in Madison's room. Both her brother and sister were 10. I closed the bedroom door and Madison told them that if they made a sound she would beat them up. Then she told her sister to bend over, she did, and I went behind her. I pulled her pants down and she was wearing briefs. Madison said "You know you're not supposed to wear guys underwear Kaelin." Kaelin didn't say a word and I grabbed the briefs and lifted her up, Madison grabbed the front and pulled. Kaelin kept quiet but almost cried. Then we took Kaelin to the bathroom and I gave her a swirly while Madison gave her a wedgie. When we were done we looked for her brother but he had escaped, we looked all day but couldn't find him.