I had seven hermits locked into a fort. Unfortunately the first liason slipped in before I could seal my dwarves off. They began sending wave after wave of migrants to me, a good 5-10 each season. I left them outside, all recruited into one giant squad of wrestlers. They roamed across the map like a pack of feral dwarves, destroying every animal on the map but lacking the skill to eat them. They subsisted only on vermin, brook water and pure rage. Despite the fact they were all constantly starving, dehydrated and exhausted some of them turned into pretty good wrestlers. There were a lot of tantrums thrown, so they fought each other a lot. Every once and a while one would die from a brawl, wounds sustained from a brawl, or would go mad and throw themselves into a pond. All in all I was surprised how long most of them survived with no attention.
The second winter the orcs came and wanted to trade. Having never seen trading orcs before I decided to lower the drawbridge to see what they would offer. The hermits curiosity made them forget their previous two years of neglect. As I watched the caravan of orcs make its way to the fort I see an extremely fast wrestler sprinting to the drawbridge, leading the massive pack.
I thought I could save my hermits, and issued the order to raise the drawbridge again. The wrestler darts inside, tantruming. He body checks the dwarf about to pull the lever, breaking his hip. He then destroys the lever.
This is when I had that moment.
I issued the order to flood the fort, the hermits would take the wrestlers with them to a watery grave! But the floodgates stayed closed. The wrestlers had bedridden every single one of the hermits with broken legs.