was waiting for my gf and her parents and her brother to come back from vacation. I was tasked with unbolting the back fence so the dad could reverse the caravan into the garden. Which I did. It was a hot summers day and we had no idea when they would be back and by we I meant the brothers gf. She was no help as she just got a towel out and watched and stripped to sunbath. We chilled as we waited and I went to get a shower. I didn’t close the door and the brothers gf peeked in and said did I need a hand or two. But as I was going to answer we heard voices.