So we're sitting in my intermediate microecon class today and my teacher is scribbling away on the white board with a red dry erase marker and babbling about Average Variable Cost curves in a thick Thai accent when this kid in the back of my class raises his hand and says:
Fratty Kid: "Hey... Umm... Could you like, not use a red marker... Or a green one..."
I instantly realize why and start laughing to myself.
Prof: "Umm... Okay...?"
Fratty Kid: "I'm colorblind... Well... Really colorblind..."
Prof: "Oooooh... That sucks..."
He proceeded to get a brown marker.
I laughed to myself about it for about 5 minutes after that.