I haven't really done pranks, except this mild one. As a young teenager in the early 2000s, I was staying overnight at a friends house. We got up the next morning and we walked around the town he lived in and went to some farmers fields not far away. The farmer had recently cut one of the fields and bailed it into lots of round hay bails scattered around the field. The field had a bit of a slope on one side and as no one was around, we got the bails from the top of the slope, pushed them down the hill and got all the bails in a long straight line in the middle of the fie;d. We didn't stick around so don't know what the farmer thought when he came and saw all his hay bails lined up in a row in the middle of the field.