Before I finish that thought, she’s wrapped her mouth around the tip of my dick stroking my shaft with one hand. I can’t believe this is happening... I’m about to cum inside her beautiful young mouth. “Run your other finger up and down my shaft, between my balls, push against my asshole.” She’s complying without hesitation. The cheeks of her face look hollow as she has been opening her jaws wide to accommodate my cock. So beautiful! Just a few blissful moments later I’m releasing myself into her. Of course, I'll pay for dinner with the money you have made for me. That is everything but the tip. For that you get to suck some more cock."I didn't like that, but what could I say. She had me, I had to do anything she wanted so my parents didn't find out what a slutty whore I was becoming.Out the door I went, I could feel the cooler air on my naked body. There was a small breeze; and I felt it on my cunt as I walked to school. It felt strange being naked like that in public, but hopefully. I also realized I was doing a great blow job. Ben suddenly put his hand on my head and started to moan louder.Few seconds later he began to shoot spurt after spurt of cum.I swallow in rhythm with his spurts of cum, sucking him hungrily…I finally let his cock pop out of my mouth and I looked up at him. Ben smiled at me, saying he had never imagined that I would be such a cocksucker…He then pulled up his trousers and he left my office.Late afternoon I went straight home to get ready for my night. I was surprised that I didn't feel embarrassed or uncomfortable as I undressed. Using my penis my mother showed my sister the most sensitive areas of a male cock and how to stimulate a cock head with her fingers. My cock was hard and it bounced softly as the blood pumped into it making it even harder. My hard cock was made even harder by the sight of my nude sister. Her pubic area looked delicate, and soft, where her pale blond hair completed her small pussy. I suddenly wanted to touch her.