In England you sometimes see these “wavy” brick fences. And curious as it may seem, this shape uses FEWER bricks than a straight wall. A straight wall needs at least two layers of bricks to make is sturdy, but the wavy wall is fine thanks to the arch support provided by the waves.
I’m English and have never seen one of these in my life! Gonna be keeping an eye out now though, weird wavy brick walls I am coming to find you.