Not Enough #11

Debra moved her feet further apart, forcing herself to come into a modified squat, her arms dangling at her sides, her cunt mostly bald and fully exposed, quickly obeying the command given to her, her shoulders still slumped in some sort of abject surrender, never once raising her head to look either one of us in the eye. "Now you, Sir Lancelot, lick." And I settled down onto my haunches, moving almost as quickly as Debra had, my will to do anything else seemingly taken away from me. I found that her legs were spread wide enough so that I could just fit my shoulders between her knees. It was an difficult stance for her to maintain, and yet she didn't protest the awkward posture.
I moved my head closer to her pussy, forming my lips into a ring, as I located her clit and ever so gently began to vibrate it by moving my tongue in and out against it, eagerly finding the sensitive area and knowing that I found it by the soft groan that escaped her lips. The woman, who I now know as Amalia, stood up, the sheet falling away from her breasts, her nipples puffy in excitement, the tips erect. She still wore a pair of sheer boypants, her dark pubes showing through against the whisper thin black nylon, a small stain of wetness showing that she was joining us in being aroused by what she was creating.
She came around the bed, standing beside us, watching, inspecting, making certain that I was licking Debra off adroitly, Debra now beginning to buck her hips back and forth as she gave into to my tongue. I abandoned the licking and just started to suck her clit, now wildly erect, standing up like a tiny cock, Debra now moaning in rhythm to her hip thrusts, stirred on by my random licking as her hips receded and pushed forward, almost fucking my mouth with her clit, my own cock now wildly erect as well, drooling with precum as I joined Debra in being lost to the surrender.
Amalia reached over and took her left nipple between her thumb and first two fingers, squeezing hard and pulling downward, forcing Debra to bend forward at the waist, making her moan with the sudden sharp pain. "You're not to cum until I tell you you can. You understand that, don't you?" she hissed into Debra's ear, barely loud enough for me to hear. Her question elicited no response, Debra being too far gone in her own private lust, the pain at her nipple just driving her further forward into her own personal playground of sensation. Neither one of us was conscious of her movement, as she stood behind me.
Until Amalia slapped her hard across the face, causing her to rock to one side, her palm and fingers almost imprinted on Debra's left cheek. "You don't cum unless I tell you to cum. Your orgasms belong to me."
And I suddenly understood that I didn't know if she was talking to me or to Debra or to both of us, but I was in big trouble, as I felt my cock jerk once or twice, my sperm spilling gently on the floor.