i’m going to go out on a limb here and say that butt cramps are the worst cramps of all, residing in such a large muscle group and all. butt cramps. good god. i really am out of shape. we went around the block three times. three times. granted, the block is really two blocks smushed together, and there’s a slight incline in one part, and we probably rode about a mile all told, but … still! butt cramps. frickin’ ow.