It was during a heatwave when i was asked if i was interested in going over to mates place and having a pool side barbecue. I said yes as i knew i would be seeing his hot sister (B) in a bikini. Every time i saw her i would get a hard on. I was desperate to fuck and she knew it too. I arrived there bringing a few beers and nibbles for the day long barbecue. I was the first one to arrive and as expected B was in the water jumping up and down. I got hard straight away. So i cracked open a beer and started to drink it. My mate then had to go and get more beer and other supplies for the other people turned up. So while he was away i went in the pool and started to muck around with B. Instantly she felt my hard on up against her and whipped my boardies off and started to suck my cock. After B suck my cock she whispered in my ear "would you like to fuck me" . Obviously i said "yes" and i moved aside her bikini bottom and slid my rock hard cock inside of her as i leaned her against the side of the pool. As soon as it entered her she moaned and wanted more as i thrusted and thrusted until i came inside of her. I dumped a good sized load into her pussy and then i took off her bikini top and played with her perfectly shaped breasts for which her nipples were hard and erect.

Thankfully we had finished well before her brother came home and was none the wiser.