Today started like any other day, until my friend threw me a challenge I couldn’t ignore. It began as a playful dare: “Go to the underwear shop, buy a men’s thong, and wear it later at the dorm. If you don’t, you’ll have to masturbate and cum in your briefs—then wear them for the rest of the day as punishment.” At first, I laughed it off, but the more I thought about it, the more I felt a mix of curiosity and determination. I’d never worn a thong before, and the idea of trying something so daring was both intimidating and exciting.