Headmistress' Favorite Sport Part 4

Headmistress moved quickly to cuff their hands behind their backs. Then she ordered them to lie down on their backs, legs spread wide. To raise their asses up as ordered, they placed their feet at their buttocks, folding their legs, and used them to stem their asses up. Headmistress dealt with Denise first. She knelt between Denise's legs with two short needles, both with wires at one end. She looked Denise in the eye and said: "You had better not move an inch, bitch." Denise swallowed in fear as Headmistress turned her attention to Denise's crotch again. Lifting up Denise's embarrassingly erect member and her balls, she inserted one of the needles right behind Denise's scrotum. The pain was unbearable and Denise and instinctively tried to jerk away. Headmistress von Kaltenbrunner had anticipated this and had a firm grip around Denise's genitals so that she was unable to get very far as the needle was pushed all the way in. "You will be punished for that, you stupid cow." Headmistress remarked coldly as she picked up the second needle. "Headmistress, yes, Headmistress. Headmistress, I am sorry, Headmistress." Denise cried. It was the same story with the second needle as it entered Denise right next to her asshole. Headmistress finished by connecting the wires to a small control box, before moving on to Yvonne, where the same thing repeated itself. Yvonne wasn't able to hold still as the needles entered her either, and now they could both look forward to further punishment.

Headmistress ordered Denise to stand with her back to Yvonne, who was ordered to kneel, so that Denise now squatting over her head. "Now slave," Headmistress addressed Yvonne, "Open your mouth and hold it open. Don't you dare spill anything or puke." Yvonne now looked at Denise's ass only inches away, her mouth poised to take Denise's shit. Headmistress now pushed a button on the control connected to the needles in Denise. An electric shock, not big enough to cause real pain, surged through the needle near Denise's ass causing her to expel her stomach contents involuntarily, her insides convulsing with the shock.