The Origin of the Care "C"

I was the absolute worst as a child.  I am surprised my mom didn't leave me at a firehouse; I was a truly horrible child. One day my mom was talking to me about something I found utterly dull, so I made my hand into a "C" shape and made this declaration, "See this? This is the Care "C".  I do this when I don't  care."  I then proceeded to wave it around. I would have slapped me... she had way more patience than I ever could.  I still use the Care "C" - particularly on teenagers.