I leaned forward, trying to keep my balance as my chinrested on the toilet seat. With my hands tied behindmy back, I could easily have toppled over, which wouldhave caused excruciating pain in my nuts. Perhapsthat’s what Karin really wanted. She watched meclosely as I maneuvered my face close enough to reachin with my tongue and fish the string into my mouth.

I looked up to see Karin’s smiling face looking downthrough her small pert breasts. She loved finding newways to humiliate me. But this was having the desiredeffect. The tip of my cock touched the cold ceramicbowl, its swelling size betraying the excitement I wasfeeling.

I closed my teeth on the string, and pulled my headback. The red piece of cotton came free and hit me onthe chin. Karin laughed at the sight. “Very good,” sheroared. “Now, you can clean me up. And don’t missanything.”

Her toes closed over my sack, squeezing my balls evenmore tightly. I leaned in and began licking her lips.The acrid taste repulsed me, but I carefully lapped itup, afraid to offend my Mistress. She put her headback and closed her eyes, relishing the sensation. Herclit was swollen, responding to my tongue bath. Above,I could see her nipples were also erect.

After long minutes, Karin shifted on the seat, leaningback. Suddenly, a stream of piss came forth, catchingme on the cheek. I didn’t need for her to tell me whatto do. I opened wide, catching the bitter liquid,trying not to miss a drop. “Oh, you’ve gotten so goodat that,” she purred, putting her hand on the back ofmy head. I coughed as the urine stream caught me ofthe throat, but continued to gulp down the liquid asfast as it arrived.

After the flow ended, Karin warned me not to move. Herbottom clenched, and she grunted as her bowelsemptied, making plopping into the water. Seconds latermy balls were freed as Karin stood up and turnedaround, bracing herself on the top of the water tank.I again leaned forward and pushed my tongue betweenher cheeks, cleaning her puckered hole. My humiliationwas complete.

By now she was in a sexual frenzy. Sitting back downon the toilet, she roughly shoved my head into hercrotch, holding my face tight against her bush. Ifrantically licked and sucked her lips, making surenot to miss her clit. “Fuck yeah!” she shouted as Idrove her to orgasm. Karin’s foot stomped on my ballsas she shrieked out her pleasure. She didn’t let upuntil the last spasm of pleasure had subsided.

Karin rewarded me that night by allowing me to sleepon the floor beside her bed. My hands remained tiedbehind my back, my cock throbbing for lack of release.The leather strap kept my balls tightly bound andsecured to the bed. There would be little sleep for methis night.