[なめぞう] うっかり入っちゃった！？ 従姉妹と密着ゲーム中（１３）
#375286 - I did my part, explaining the different types of metals, non-metals and metalloids we had mixed into each compound, and why. Briefly looking around, I lifted up the back of her skirt and taped it to the small of her back. And that showed us the relationship between both metalloids and - AHH! she moaned abrubtly, as I gave the first pound into her teenage cunt.