No, not a Blue Man like this:
https://upload.wikimedia.org/wikipedia/commons/8/87/Blue_Man4_%28SP%29_2009_Brazil.JPG
But a Blue man like this:
http://www.thegoldenscope.com/wp-content/uploads/2015/06/Photo068.jpg
Well, OK, maybe like this:
https://media-cdn.tripadvisor.com/media/photo-s/01/21/ca/67/tuareg-tour-guide-on.jpg
This is what happened. I was spraying, as I do everyday, for garlic mustard. I have a bit of land so it is easy to either miss some or to spray it many times. So I use a blue dye and a spreader-sticker on top of the weedkiller.
I broke my hose handle, went away to replace it, and did not notice that I had not screwed down the top of the spray tank. An hour later, I realized that the tank had been steadily dripping on me, and that the back of my body was blue from head to toe!
I freaked out a bit (not because of the dye, but because of the weedkiller), tossed my spray clothes into a bunch of cold water, and jumped into the shower, where I spent 30 minutes scrubbing every bit of my skin as hard as I could with a rough brush.
So now I am not a Blue Man any more. Instead, I am
https://c1.staticflickr.com/4/3512/3992105972_0af072819a_b.jpg
A Red Man.