Aunty Laura's Bikini Bottoms

When I was a teen my family were invited over to Laura's house, a family friend, to swim in her pool. I didn't have any swimmers and I was offered a pair of board shorts owned by her son to wear. I was then instructed to use her bedroom ensuite bathroom to change. I walked in and took my pants off and then I saw, on the floor of the bathroom a pair of blue bikini bottoms, my dick started to get hard. I picked them up and saw she had worn them which made my dick grow hard as a rock. For the first time in my life, I was alone with no pants on and a pair of women's worn panties in my hand. 

I sniffed them and they smelled strong like vagina. I took them, got the crotch of them and made sure the inside of the crotch where her pussy rests, all that material was snugly wrapped around my hard cock. I was jerking off with them, rubbing them all over my dick, pulling it back and forth. I heard a knock at the door and her son ask if I was ok in there. With his mum's pussy stained undies furiously rubbing against my raging hard dick, I said, "Yeah, be out soon".

Before too long I started to cum, my dick still wrapped in her bikini bottoms with my orgasming cock head rubbing against the pussy stains of the fabric shooting thick gooey cum ropes all over the bikini bottoms.  It was alternating between the pussy fabric and the arse fabric where my tight balls and stiff erect cock continued to erupt thick gooey cumshots all inside my Aunty Laura's worn pussy stained bikini bottoms, soaking them especially on all of the parts where her pussy lips and arse sits.

I put Aunty Laura's bikini bottoms back on the floor and walked out feeling amazing and down to the pool. As I'm swimming, five minutes after leaving the bathroom, I see Aunty Laura walking down the steps of the pool, with her big tits in her bikini top. She started to make me hard straight away, then I saw she was wearing the bikini bottoms I had just shot the biggest load of cum ropes into. (Being young and being my first pair I'd shot cum into, I had no idea had much cum I'd actually shoot or how to be discreet about it. It being an orgasm with her pussy juices rubbing against my cock made the orgasm so intense that I just fired away thick gooey cumshots, capturing every gooey drop in her bikini bottoms.) 

After her waist being in the water for a minute or 2 I saw her fidgeting with her bikini bottoms, pulling the crotch away from her pussy lips etc. She caught me oggling her and I looked away and kept swimming. I saw her leave the pool area and come back minutes later wearing different bikini bottoms. An assumption is my cum got very slimy when she entered the water and she started to feel my cumshots all over her arse and pussy. She must have known something had happened.

That was the first time I wrapped Aunty Laura's undies around my hard cock, wanked off in them and shot cumshots in them but it wasn't the last.