"I fell."
From Create Your Own Story
Seeing no discernible way to explain yourself out of this situation, you decide to go for broke. You swallow hard, look the older sister dead in the eyes, and tell her, "I fell."
The sister's eyes light up in understanding. "Oh! That's okay then. Are you alright?" She reaches a hand toward you to help you up, completely unaware of the total lie you've just spun. Do you accept her offer to help you up, or keep digging in to the little girl's twat? Or do you test your silver tongue further and ask the sister if she wants to have sex?