Static Grass

A model railroad building buddy of mine once quipped that he was fresh out of static grass.

I quite naturally replied with the retort, "What the hell is static grass?"

Which resulted in my friend spending the next twenty minutes explaining not only that static grass is what modelers of miniatures use to create realistic grass lawns and parks, but that it is a huge improvement over the dyed sawdust that was the only choice modelers had for grass back when he first got started in his hobby.

To which I replied, "Huh - 'learn something new everyday."