Thistle? Prickly Lettuce of some Kind?

I do not know as of yet if this is either a type of thistle, wild lettuce or some other type of plant. After another member at BCUSA posted a thread on eating the leaf stalk of the Bull Thistle, I was on the lookout that day and this is the closest thing I could find. I also learned that I need to cut a leaf off, and look at its underside, and also take a closer picture and feel it as well.