Another mystery solved is the x-large thong underwear listed on the SW.
Just jumping off you,
the x-tra large was only his weight. Not is, erm, length or girth of, erm, thumbs, yeah, thumbs. It doesn't work out equally for most men that way (sorry guys), so do not worry about that other poster that is thinking about it. Just stop thinking about it. Don't go there at all. Small or large is not good, just put it out of your mind now.