The seams in a pair of jeans can cause an excruciating condition in a very sensitive area of ones anatomy especially if those seams are similiar to the ones found in Lee jeans which are the brand I usually wear. I had this happen a couple of years ago even with padded knickers underneath. I now ride with either bike specific pants or in pants with flat seams or gusseted crotch where the seams don't come together in one spot. Oh yeah the padded undies are a godsend they can be worn under anything that isn't too tight and be comfortable. In summer I like the REI Sahara convertable pants, just remove the legs for shorts in the afternoon when its warm.