This was very uncomfortable as we still desperately needed to wee though. Unfortunately it was discovered that this could be left for quite some time,...days & weeks with the only side effect being our extreme discomfort.The next weekender was the annual month away. The day before master had guests 3 men & one of the bikini girls. A rule of the house was that any guest female was in charge of me. She was first girl. The evening before the men had enjoyed my fellatio & then my anal rape Master. She was saying he is so charming and has big dick. Hearing this I got very angry. But I didn’t tell her that she is my sister .she was now rubbing my cock and I was getting hard .. I was angry with that man but at the same time I was getting aroused by this lady and as a result I enjoyed my sister view with a black man rubbing her ass.. Then the next thing I saw really surprised me. He was kissing my sister.After some time the party ended and we both me and my sister went to our room. We had. Then came the difficult question which I was expecting.“Who are you and what are you doing here near the toilet?”I explained about me that I was the night guard in the hostel and the store and I lied that I came to switch off the light and close the tap which was left open for a long time. She accepted my story. She said she was relieved now as she has been all alone in the hostel and her sister has gone to book tickets in a browsing centre. As she was tired and sleeping, her sister waited for. It always ended badly, always with her wishing me the worst things and slapping me. Also last night, when she yelled at me: "YOU ARE REALLY USELESS! COWARD! NO BALLS! Do you really want to be with me? Well, PROVE ME that you are a man! See you in the morning, at the Silver Gate!"The Silver Gate, a gothic nightclub, I've never been to. She frequented it often, she and all her dark friends who were interested in that weird, gothic stuff. I never went there, but not because it scared me, I just.