You know those coloured twisted ribbon things people wear to show allegiance to a cause? Friend showed me her latest one last night in the form of a yellow metal badge. She did tell me the cause but, erm, I forget which one it was. There's probably several dozen causes using the colour yellow anyway which is classic example of what a software person would call an "overloaded variable" which is as bad as it sounds.
This morning, I logged onto Facebook and saw that a friend had joined the cause "Autism Advocacy" I clicked through and spotted their ribbon