Lost sneakers

Rex needed little strength to hold me down. In a sigh, he turned me around so that my bare stomach was visible to everyone. I could see the silhouettes of the boys through the thin fabric of my shirt. I saw that one of the boys walked up to me and knelt in front of me. I thought it was Sem who started working on the laces of my sneakers. After some messing around, he gave up and took off my sneakers without untying the laces. Rex had tied them so tightly that my left sock also came off. Sem threw my sneakers in the corner of the room, leaving my left sock for what it was. He left the right sock on. I kept trying to loosen up but was no match for Rex and Sem, let alone when the other four join in too.