You expected Nikki to pull up her skirt and show you her panties, but instead she reached up under her skirt and yanked her panties down from under it. Nikki had made sure you never saw her panties on her, but she had also made sure you never saw them anywhere else either. There was no laundry visible anywhere in the house, anytime you were over there. This was your first glimpse at Goddess Nikki's panties.
The plain white thong was incredibly simple, but incredibly sexy at the same time. The way it was spread between her knees as it slid down her legs, you were looking right at the luckiest part of the whole thing - the little bit that got to spend its entire day and night rubbing on Nikki's pussy!