One could argue that these little green blobs are some form of corporeal fairy spirit instead of being just water drops.
Alternately, one could argue that this is what you see in your mind when you go buckwild with a bottle of absinthe (aka, "The Green Fairy").
Or, one might simply suggest that these are waterdrops and nothing more.
But that person, I'd chide for having no imagination. Then I'd push him into a mudd puddle and laugh as he had to scoop mud out of his mouth and off his powder blue Polo shirt.
Hahaha, stupid person. You're covered in dirt!