Or even better, make it corrosive.
"The flying spit hits the farmer in the leg!"
"The farmer is melting!"
I have had bad experiences with melting.
In my journeys I have had several Dragon-crushing adventurers. With one such adventurer, I decided to enter a cave and battle a dragon inside of it, a mistake I would never make again.
As it turns out there were two dragons. The first dragon was mercilessly slaughtered by my spears. The second entered the chamber and unleashed his breath attack. I laughed as the combat text filled with reports of successful blocks. The smoke began to fill up the room, obscuring everything in sight, yet the battle waged on, many spears and claws being deflected, it seemed a lethal blow wasn't happening. I would need to bleed this dragon dry for the kill. I wore the dragon down, but it was getting a little hot. I tried to find an exit, but the smoke was too heavy. "You are melting! You are melting! You are melting!"