So soft and creamy. She moaned as I licked her nipples and then when I put as much of my mouth on them as I could she arched her back in ecstasy. As I...licked and sucked I ran my hand down her stomach and unbuttoned her shorts. I put my hand down her thong and felt her landing strip. There was one trick I learned which is to tease the girl a little. I act like I will touch their pussy and then go around it. I will brush over it with my hand but not actually make good contact with it. I did this. But as I turned, I was greeted with the sight of my good colleague, Sonia, with her skirt and panties bunched around her ankles and two fingers of her right hand buried in her shaven cunt.I stood there stunned. Both of us did. The situation was so erotic but so embarressing."I... I, I'm so sorry, I didn't realise anyone was in here..." I managed to stutter out."It's ok, it's my fault." Sonia replied. I felt I should leave, but I couldn't move, the sight was too entrancing.I eventually snapped. Then I held her from her waist and started kissing on her neck and clutch my fingers into hers. I was continuously kissing her neck and on her shoulder. Then, I started kissing on her lips and she opened her lips more.I entered my tongue in her mouth and pulled her towards me. My left hand was on her ass and right on her neck. I could feel her heavy breaths.Then I took her to the bedroom and placed her on her bed. I just grabbed her one boob with my hand and started sucking the other one.. "Good girl," you repeated. "Count each one, and now you can thank me for each." "Yes, Master," I replied again, waiting tensely for the first blow. You took me by surprise, bringing the crop right up between my legs on my pussy lips. "One, Master, thank you!" I cried out. You waited a second and hit me again - "Two, thank you, Master!" You kept going, patiently dragging it out while I shook with anticipation between each blow. Finally, at ten, you stopped, and knelt to gently kiss my sore.