lol, along with others I briefly think of all the people asking how to get denser nugs
Some of the super heavy sativa's, the ones that cattail like crazy, tend to be more fluffy, but huge. The individual cattails tend to be as dense as normal bud, but the way the cattails mesh is quite different than the dense indica colas you tend to get. Anyway, other than that, you don't want fluffy bud. Fluffy in the sense that most people use it is usually a lack of proper light. If they mean they don't want brick weed, that is quite a bit different than telling someone you want fluffy, especially if that person deals in top quality herb