The first thing I would do is roll an alchemy check to see if the characters knew what the contents of their stomach was.
If they succeeded at that, I would apply the newly minted "splash weapon" tables, but with the following caveat:
For every point of damage dealt by inducing vomiting, the Character takes an equal amount of subdual damage. Vomiting is very ennervating. If enough damage was dealt in this fashion, I'd reduce a point or two of charisma (for bad breath and/or tooth decay).
Eventually the PCs would have to eat more in order to vomit more or each splash would have diminishing marginal returns. While the PCs were eating, the Troll could quietly be regaining strength. It could be a kind of relay race: can the PCs eat/spew faster than the Troll can regenerate?
I further propose that any consideration of this issue must necessarily involve addressing the following issue: what happens if (as would likely happen *sometime*) a Troll eats a rotten billy-goat or commoner and barfs on himself? Does this diminish his capacity to regenerate? It might explain why Troll's heads stick so far out in front of their bodies.
Of course a truly crafty PC might use the Troll's stomach acid against him by repeatedly gut-punching it until it coated itself with stomach acid. This would alleviate the need for PCs to eat as much, although they might have to feed the unconscious troll, which (I can tell you) is no easy task.
Finally, I'd also make sure there was an NPC therapist nearby to ensure that vomiting didn't develop into a long-term disorder.
If they succeeded at that, I would apply the newly minted "splash weapon" tables, but with the following caveat:
For every point of damage dealt by inducing vomiting, the Character takes an equal amount of subdual damage. Vomiting is very ennervating. If enough damage was dealt in this fashion, I'd reduce a point or two of charisma (for bad breath and/or tooth decay).
Eventually the PCs would have to eat more in order to vomit more or each splash would have diminishing marginal returns. While the PCs were eating, the Troll could quietly be regaining strength. It could be a kind of relay race: can the PCs eat/spew faster than the Troll can regenerate?
I further propose that any consideration of this issue must necessarily involve addressing the following issue: what happens if (as would likely happen *sometime*) a Troll eats a rotten billy-goat or commoner and barfs on himself? Does this diminish his capacity to regenerate? It might explain why Troll's heads stick so far out in front of their bodies.
Of course a truly crafty PC might use the Troll's stomach acid against him by repeatedly gut-punching it until it coated itself with stomach acid. This would alleviate the need for PCs to eat as much, although they might have to feed the unconscious troll, which (I can tell you) is no easy task.
Finally, I'd also make sure there was an NPC therapist nearby to ensure that vomiting didn't develop into a long-term disorder.
