Sperm donation

when i got to clinic i was a bit nervous being first time donating at 17 years of age, there was two very hot nurses at the desk , as i approached them they where very hostile friendly , so i relaxed more. , one nurse gave me a sample bottle and adult magazine , as i seen on the front of the magazine the girl wearing satin panties, so i mentioned my satin fetish and said id donate more with them ha, . so as i got to my cubicle the other nurse shouted over to me , as i turned she was taking of her satin panties , threw them over to me , i was sooo hard and they knew it , i grabbed them went in the cubicle whipped it out and wanked hard with them , rubbing them all over my balls and cock hoping sed come in and help ,,, and i nearly filled the sample bottle , oooh what a wank ,m i put the lid on the bottle , and went to the desk to hand it in and return the panties , kind nurse let me keep them , and i still have them to this day ,