Once in a lifetime - more only if you are very lucky, you are a silent and happy bystander as I was on a hot July day a few years ago when walking in a park I heard noises. Pretty quiet ones. Peering in the deirection they came from in some undergrowth I could see flesh fairly well hidden from the world but not quite well enough for me. I got down on my hands and knees and crawled under some vegetation. A few yards away were two girls no older than their early twenties. One had light brownish skin and with the sort of broad areolae about her breast which usually belong to girls in the 40C bracket was between the legs of the other and the second was pulling, not very gently at her own nipples. It was like a very slow motion sex film. The second girl had her thumb in the other's cunt. The second was breathing heavily and her mouth was wide open. Monosyllables came out but they didn't form words. She stopped to exhale loudly occasionally. The fingers of the other were moving from side to side now and I will not easily forget the look of total fascination in her eyes as she looked at her as if she was setting eyes on her for the first time. Now the second girl had her eyes shut and her face took on a that slightly distressed look that girls can sometimes have when it is becoming inevitable that they will come later. The first girl, the white skinned one with smaller redder nips was using her fingers to go, as it were, up and round in the mouth of her friend's cunt and then from side to side. Gradually she moved her hand up her crack until her longest finger was just touching the other's clit. She gave a sudden lubricating spit at her cunt and pulled her hand up between her legs. The second girl started to work at her nips again. They looked very hard and she was certainly breathing hard. The first girl's head was down when suddenly the pair turned round and kissed each other hard. The second now spat on her fingers and her finger against the wall of her pudenda looked so small. I remember being so struck by how big she suddenly seemed down there. Girl one's fingers were doing complete circular movement on her cunt. Girl two's mouth was opened in an oval and her mouth was open and two fingers were working. Everything was faster and neither seemed to know now exactly what they were doing; they seemd to be feeling around randomly and desperately for the nearest sex organ. Quite suddenly I thought the impromptu show as over because they stopped but that was only to change positions. They pulled away from each other and both started urgently frigging themselves their fingers working faster and faster. It's funny. In the whole time I heard so few words I can remember them. Girl two said "I want to see you come first" but immediately exploded herself. "Shit," she said and in the moment it took to say it Girl two came as well. They weren't very demonstrative orgasms no shuddering, no momentarily bleary eyes looking nowhere, but orgasms they undoubtedly were. Their hands fell to their sides and they first looked at their own cunts "I'm so swollen," said girl one - and she was - and the pair looked at each other's pudenda with the sort of total fascination you would expect from girls who had never seen another's cunt before. Perhaps they hadn't; perhaps this really was a first. I doubt it somehow but it's a nice thought. I crept away and you may imagine the outcme.