I'm hoping from some interesting input from Looper and Eddo Cheddo in this thread.
I had the good fortune at the end of grade 11 to have new neighbours, and as I used to live behind a large swimming pool bounded by a creek, the neighbour's daughter and I used to get it off on a small sandy beach
next to the creek, after swimming in the pool on hot Summer nights. The contrast between cold water and warm pussy was great ! And a fantastic experience or a schoolboy in his grade 11 Summer vacation. Our relationship lasted until the end of Autumn.
Around age 31, I set up a mosquito net in the rainforest and had a wonderful afternoon with a girlfriend. And another time next to a lovely creek.
Al Fresco sex years later with a Chinese girlfriend was a hoot, near a lake with nobody around. Also on a deserted beach, in the dunes at night on a full moon. She just loved that.
Pretty tame stuff so far....