Not from then on

I felt this exciting tickle in my stomach again. I knew my pants were going to lose against gravity. With every step I would take from then on, it would continue to slide down. Especially when Jill decided to give gravity a helping hand. With her finger she went under my blouse and started to lightly tickle my buttocks. To avoid this, and to keep my pants up, I shook my ass. And that was my mistake! There went my pants, slipped down to my knees. From, played, fright I let out a scream. With this I drew attention to my falling pants and my partial bare lower body.

"Slut," Jill whispered in my ear, "you're really enjoying this, aren't you?" I nodded almost imperceptibly. "Then I challenge you to drop your pants to your ankles. When that's done, say you're afraid to hold up the group and take your pants off without using your hands."

"But I can never get it over my sneakers." I said softly.

"If you take them off along with your pants, you don't have to leave anything behind and I'll put them in my backpack for you. Then you're sure it's still there when your assignment is over. Word of honor Amira!"

Here I had to think for a moment as I saw Roy and Trent's wide eyes on my crotch. Could I handle being in the museum wearing only an unbuttoned blouse? And would the girls still protect me?