Is it normal to pee while swinging?

We have a beautiful backyard with tall trees which hide our activities from neighbors. We have also a swing there. We often sit nude in backyard as well as enjoy swinging. Once we were swinging slowly with no clothes on when I felt to pee. I wanted to go to washroom to relieve myself but my hubby suggested to have fun by peeing while swing was moving. I found the suggestion exciting so started peeing. The swing was moving slowly. I was sprinkling ground with pee. Later my hubby did it same. I personally believe it was/is not normal. What do you say?