I was member of the MEAF Band, Cyprus in the late 50s. We visited a R&R camp and as well as playing, we were able to use the facilities - and I got pretty well stewed. Around midnight, it seemed like a good idea to go for a swim in the moonlight, on my own... reaching the beach, in my confused state I took my swimming trunks off, and headed into the water, which was nice and warm. Floating around, I met one of my colleagues, we said 'hi!' and carried on drifting about... eventually I had had enough and went back to the beach - now to find my trunks - in the moonlight every little hollow could have been my discarded sportswear - and every time I tried to pick one up I fell over -- amazingly I eventually found them, and went back to my tent and fell into bed.
Next morning I felt sand-blasted all over - being wet from the sea, and falling over in the sand - it had all stuck to me, and the bed was full of it - my sheets were like sandpaper!
Another time, in Nairobi, it seemed like a good idea to take a taxi back to the camp - with me riding on the bonnet...