Urban Dictionary

I've known about Urban Dictionary for some time now, but it was only recently that I realized that they, too, had a Word of the Day email (just like dictionary.com).

Today's WOTD delighted me...

carbon guilt n. The feeling of guilt for using too much carbon, e.g. too much air travel, driving to the corner shop in the car, etc.
'Man, I have to fly to Zurich for the second time this month'
'Whoa, you must have some major carbon guilt over that'