ふんどしになったりしています。 is a phrase I stumbled on by accident, translating into "become the fundoshi." I think I shall!
I don't know the literal translation but I suspect it is something along the lines of "tighten your fundoshi for action!" In other words, roll up your sleeves and get to work! Be in touch with yourself. Dress yourself consciously, with what you want your fate to be in mind the whole time. Keep your mind on your goals. Be flexible and listen. Be willing to move and change. Be lithe, supple, and sturdy.
Become the fundoshi!