ボイン反発係数e = 衝突後の速度/衝突前の速度 >1妹のゴムまり爆乳は一見にしかず!半袖セーラー服生中出し!Jカップ105cm はるにゃん
Boyne coefficient of restitution e = velocity after collision/velocity before collision > 1 My little sister's huge rubber balls are worth seeing! Short-sleeved sailor uniform vaginal cum shot! J Cup 105cm Harunyan