So what is “Bumble and bumble”? It’s a hair salon in Boulder, Colorado. (Boulder is a very cool town, if you have never been there. Or even if you have.)
I didn’t go inside the shop — but I did enjoy their sign. Their designer had fun with the “Bb.”
If I were the sort to frequent hair salons, I might not want a bumbler to do my hair — but the shop is up‐scale enough that they must do a good job. A classic example of form winning over substance.