spitballs!
Exactly! Spitballs are projectiles discharged (explosively) by compressed air. According tho this wacky judge, such things that have nothing to do with fire are "firearms."
Continuing this illogical definition of "firearms," hairspray, other household sprays, fire extinguishers, yogurt at high altitude, pressurized soft drink cans, and living animals all discharge projectiles by means of compressed air/gas. Would this judge categorize all these as "firearms?" Maybe he needs a dictionary.
You are right.
We used to make notebook paper "spitballs" with the clear plastic barrel of a Bic pen, and an "L" shaped angle of coat hanger wire.
Maybe he needs a brain!