Riding School

I have a horse riding school next to my home. From my balcony I can see the students riding their horses. It’s close enough that I can hear the horses breathing heavily, I can hear the big wooden logs being hit and falling to the ground after a horse just jumped over them. Today I heard a sound coming from the same direction but which seemed a bit unfamiliar and I couldn’t relate it to any activity that usually happens there. So I tried to figure out what was making this slapping sound. Through some branches and greenery I could see that the horses were let loose in the riding arena, and in the middle, there it was: the source of the sound. The riding instructor fucking his wife which was on all fours in the golden sand.