chaff
noun
°The inedible parts of a grain-producing plant.
"To separate out the chaff, early cultures tossed baskets of grain into the air and let the wind blow away the lighter chaff."
°By extension, any excess or unwanted material, resource, or person; anything worthless.
"There are plenty of good websites on the subject, but take care to separate the wheat from the chaff."
verb
°To use light, idle language by way of fun or ridicule; to banter.
°To make fun of; to turn into ridicule by addressing in ironical or bantering language; to quiz.