Just now, in work, I was chatting to my mate Steph, and the guy she sits by asked her what colour his pen was. I asked if he, like me, was colourblind. He was.
"Ace!" I replied, "Go team Colour Blind!" and reaching up my hand, called for a High 5. He looked at me like I was strange, and my arm just hovered in mid air for a bit.