我紧张地看到我的继女不知道如何骑乘她男朋友的鸡巴，所以我教她如何好好地操。

I stay at home to rest and I hear a noise in my stepdaughter's room and I look out to my surprise that she was fucking with her boyfriend and I notice that she doesn't know how to do it so to help her I get in between them I give them examples and we end up doing a great threesome.