Probe her ass!

"Huuurmpf"

She grunts around your dick as your slick thumb forces its way into her back entrance. The pace of her oral sex isn't impacted but you can feel her protesting sphincter relax to accommodate your thumbs intrusion. As required of all concubines, she is meticulously clean. Any woman to come in likely contact with you must have an enema just in case. Their asses are always prepared for their Master's use.

Her mouth continues its expert work up and down the first few inches of your dick. Her **** focus and concubine submission training have prepared her for anything. Almost anything. Hooking your thumb inside her, you pull and push her into whatever position you desire. You admire her pert little ass, the way her legs quiver with effort, the strawberry flavored juices pooling from her pussy.

As initiate slaves, all of your girls have been properly ass trained. Time to test her further!

You unhook your thumb and slowly slide it from her depths. Feeling you withdrawing, she puckers her asshole tightly to maximize the pressure around your thumb as you exit. Immediately, you revers course and push your thumber deeper into her depths. As trained, she relaxes her butthole to welcome you inside.

Well done!

You smile to yourself, pleased with her progress. You continue to test her. Each withdrawal of your thumb causes her to tighten and fight to keep you within her bowels. With each advance, she relaxes with welcoming surrender ever time you press your fat digit further inside.

"Mrrrrmrrmmrmrmmmmmmm...."

The girl moans around your dick as another orgasm takes her. You chuckle as her asshole tightens around your thumb. Her legs shake uncontrollably as she rides the wave of pleasure before beginning to give way as it subsides. You grip your hand around a butt cheek and support her still with your thumb inside! The poor girl is exhausted from the multiple orgasms and can barely support herself.

Bzzzzzzzzzzzzz! The clitoral augment continues to vibrate unending, cruel, mechanically.

After a few moments she steadies herself again and resumes her expert blow job. Her whimpers of protest increase. Her need to complete you has intensified. She must free herself from the predicament!

Your own arousal has built. Your large cock is impossibly stiff between her rapidly moving lips. You aren't sure if you can hold off your own orgasm. You withdraw your thumb and admire her glistening pussy as she works.