I have a 16yo girl living next door and she has a African Ridgeback male dog. I have often joined her and her dog skinny dipping in their pool. Nudity amongst our two families was quite prevalent around their pool. She has spoken to me about sex a few times as she knows I have had a few girl friends and she knows a couple who have visited me overnight occasionally.Her questions have been very direct and is well aware that I have slept with them. I have resisted the temptation to see how far she will go basically because of her age. I have seen her masturbate a few times when she has not been aware of my view of her from my bedroom.

On one occasion she even asked me how big my penis became when erect and I allowed her to stimulate me to a full hard on. She thoroughly enjoyed the sensation and asked me if she could jack me off - as she put it for the fun of it. I said she could provided I could do it to her and we both had a most enjoyable 20 minutes or more. She asked me if I felt like fucking her and I said I had but I was worried about her age and what would happen if we were ever found out. It would ruin a very nice family friendship.

Yesterday afternoon I received a phone call from her and she was crying and asked me to come over to her place immediately she was in big trouble.

When I went over she was in the shower room next to the pool and I couldnt believe what I saw.

She was naked and her dog had mounted her. The dog had sox on its forepaws and was still connected to her and it seems could not withdraw from within her despite its attempt to do so. She had let it fuck her and it seems it wasnt the first time, but this time its knot had gone into her in a half erect condition and when it ejaculated the knot swelled and it would not come out. She was hanging onto the dog because it was wanting to pull out and couldnt and it was hurting her. I had no idea what to do and the dog did not like me getting too close to her to see what I could do to get it out of her. Each time I went near it it bared its teeth and snarled at me. 

I was getting distraught too because I had no answer to her predicament and the dog was getting quite disturbed about not coming out and kept pulling at her which was beginning to hurt. In the end I thought about the times I had heard about people throwing a bucket of water over two dogs fucking and now I knew why. 

I got a hose and started to hose the two of them where they were joined. The water was cold and it made her yell because of the cold and she said its making her tighten her cunt and hold the dog tighter. I stopped and then the dog got angrier with me and in the end I tied a towel over its head to stop it trying to bite me. That actually calmed it down a bit and it stopped struggling to get out of her.

I held the dog steady to stop it pulling at her and I tried to console her and work out a way to get it out. I was completely at a loss to know what to do. It had been about 20 minutes or more since I started to try and get the dog and her apart and then the dog gave a whelp and it disengaged and came out of her. As it did a gush of its cum came out with it. It was as if the dog had plugged her up to make sure the semen impregnated her had it been a bitch it was fucking. Sally was covered in it now.

I let it go and it ran off with its penis all extended and even then its knot was quite big after all the trouble it had getting out of her. It went a short distance away and began to lick itself.

She was laying on the ground curled up and crying her eyes out. I said come on lets have a look at you and see if there is any damage and what we can do.

She was reluctant to expose herself to me but eventually I got her to open up and I got a bowl of warm water and began to sponge her down where the dog had been. As I washed her cunt and legs she attempted to expell its cum and she ended up peeing herself and it went over me and she got upset again for doing that. I said not to worry it is only pee and I can wash up when I go home. In talking to her she said it wasnt the first time she had let the dog fuck her but she had never let it go in as far and it always seemed to stop before the knot went in. It had cum in her before but the dog always pulled out immediately after it had cum.

After a while she settled down and was professing to me her heart felt thanks and for all the trouble I went to and her pissing on me. She also pleaded with me not to mention it to a sole and I said that what had happened was between the two of us. She said in future maybe I could fuck her and she would really like that. I asked if she was hurt or felt damaged and she said her cunt hurt where the dog had tried to pull out but apart from that she was ok. I had a look but she had so much muck inside her it was impossible to see.

She stood up and I began to mop the place out as there was water and dogs cum everywhere. The dog had licked up a bit of the mess it had made and then dissapeared.

She was standing there watching and holding her cunt which was sore and still leaking heaps of dog cum. I suggested she have a shower and she said that would be great as the shower there had a hand held rose and she could squirt herself and wash her cunt pretty clean. She told me she had masturbated herself with the shower head a few times. I said that would have been interesting to see and she laughed.

She got into the shower and began to flush herself out and give herself a good soaping up. When I finished cleaning and mopping up and then she said why dont I join her as I was covered in water and piss and dog cum too. I took one look at her, she looked beautiful really, and I undressed and joined her and as soon as I got in with her she hugged and kissed me and I immediately got hard and she said would I mind sharing her with her dog and asked me to fuck her. We laughted and she said seeing that the dog had had its last fuck with her maybe I could pretend to be the dog. She got down on all fours and I entered her from behind as the shower hosed us down. She was still pretty full of dog cum and it was a slippery fuck. I came pretty quickly for me and I dont know if it was the fact she was young and pretty or the relief of getting the dog out of her before anybody else found us like that.

She said there is no better way to thank me and she said she hoped that wouldnt be the last time we had sex together.I was far better than her dog. I made a joke about her having a puppy litter and she said I would rather have a baby litter from me.

 She kissed me passionately as I left and she giggled when i got an erection and she said do you want some more and I said no I would take matters into my own hand if it didnt behave itself and go to sleep.

I went home with a towel around me and put everything else in the wash.I didnt have to jack off as my erection soon collapsed. About 10 minutes later she rang and said does she have to take the bone out of my cock or was it ok. She thanked me profusely for doing what I had done and reminded me of my pledge to have sex with her again.

It wasnt the last time she had that effect upon me as after that we had sex regularly 16 or not she was a great fuck and she assured me the dog has never had its time with her since but has come around seeking her she says. I dont blame it - she is a great fuck.