My family and another family had dinner together, and the other family's daughter was a VERY hot girl who was my age and went to my highschool. We were in her room talking and she looked very irritated in her clothes. After a while, she get's a different pair of clothes, and I was starting to leave when she told me to stay. To my surprise, she took of her shirt in front of me, and turned her back to me and took of her bra, too. She put on a new shirt and bra and changed her pants too (not her panties). She turned and saw my pant tented up, and she told me it was okay to relieve myself. I masturbated in front of her till I orgasmed, too excited by what I saw.