Thanks for the picture of your art room. Hey I got to see the brain with the screw. It immediately made me think of the “don’t” logo, the red circle with the slash mark through it. So maybe it means “Don’t screw yourself over”??
What you see there is a crappy copy, and rework #4 or #5. That copy was started less than a month after my brain surgeries. I've got at least one more scrap and one more rework that I'm working on with 'brainscrew' now.
Lots of rework of old stuff. ;)
/johnny