Sydney first, Kirsty second.

Filling Sydney's cunt with my cum was too much of a temptation to pass up, even if Kirsty probably 'deserved' the honour more, so, with one hard thrust I let go and pumped my seed deep inside her. She stopped her ministrations on her sister and began to groan "Oh God! Oh God!", as the walls of her pussy convulsed around my shaft as if trying to milk every last drop from me.

Once her convulsions stopped I looked up at Kirsty.

"What happened?" she asked looking down at her sister.

"I came inside your sister" I said.

"Oh" said looking crestfallen "I thought you were going to save that for me?"

I was about to apologise when I realised that, despite having just shot a (quite sizeable) load into Sydney I was still feeling like I could "go another round".

"Kirsty, hand me my phone" I said.

I turned on the 'command tone'

"Sydney, you just lie there and sleep until I touch your shoulder"

Sydney went limp and began to breath as if asleep (which answered whether I could do that).

I then turned on the 'reprogramming pattern' and handed it back to Kirsty.

"Look at the phone" I said and, as she did her face took on the look I had come to recognise as the look of one ready for reprogramming.

"You will love the taste of my cum."

"I will love the taste of your cum."

"You will love the taste of your sister's pussy."

"I will love the taste of my sister's pussy."

"You will especially love the combination of my cum and your sister's pussy. Sucking my cock when I have cum in your sister or licking my cum in your sister's pussy will be better than anything you have ever tasted before."

"I will especially love the combination of your cum and my sister's pussy. Sucking your cock when you have cum in my sister or licking your cum in my sister's pussy will be better than anything I have ever tasted before."

I took the phone and put it aside. I then touched Sydney's shoulder.

"Wha! Who! Sorry you must have worn me out. I think I went to sleep for a second."

"That's O.k." you say "But if you think you have the strength I thought we could see what your sister has leaned about eating pussy. And while you do that I can show her what it's like to have a man orgasm inside her."

Kirsty looked elated but Sydney looked skeptical. "Are you sure you don't need a rest?" she asked, "Most guys do after ..." Then she saw my cock still totally erect "... Obviously not."

"O.k." I said "how about you swap positions."

The two girls did as instructed, Sydney lying on the bed (and the wet patch that had formed there) and Kirsty standing at the foot and bending over to put her face between her sister's legs. Kirsty's pussy was soaking from both her own juices and her sister's mouth, and was showing signs of urgent arousal.

Once they were positioned correctly I gently pushed Kirsty's head forward so she could begin to "show her sister what she had learned". Her first lick was tentative as she was obviously still a bit squeamish about licking pussy however, thanks to my reprogramming, the moment she tasted the combination of my cum and her sister's juices she began to lap away like the pussy was ice-cream on a hot day she was trying to eat before it melted, causing Sydney to groan "Yes! Yes! Good! Just-Just like that! God girl! Goood!"

Once I was sure Sydney was happy with Kirsty's progress I positioned myself between Kirsty's legs, placed my cock-head at her opening and then slowly slid inside her. She, of course, stopped, much to her sister's consternation, but, once over the initial excitement remembered what she was doing and returned her attention to her sister's cunt.

Despite Kirsty's hot, soaking, tightness I found that I could hold back my orgasm with little effort and so I continued thrusting inside her until I saw on Sydney's face that she was about to climax herself. As she cried out and came all over Kirsty's face I thrust deep inside Kirsty's pussy and pumped my load into her allowing her to simultaneously experience both the end result of bringing a woman and a man to climax. Kirsty must have somehow been holding her own orgasm back so she could finish with me because as I sprayed my cum into her I felt the waves her own climax convulse through her and heard her cries of ecstasy (muffled somewhat by her sister's pussy).

Despite having cum harder than I ever remembered doing before I knew I could continue if I wanted to, however both girls looked drained.