Well I get puppysplosions, and have recently had minor bursts of bunny and pigsplosions.
Those puppies actually served science, though! They landed on the "magma flow" at the bottom of the pipe, and revealed that I have TWO magma pipes at my embark. This one I just discovered, though, is down on the third cavern layer, which I haven't plundered yet.
This siege is going hilariously. I never thought my copper weapon traps would be very effective, but holy hell, they sure are.
Helps having masses of masterwork bolts to rain down on those goblin throats too.
Update: Oh shit, this is AWESOME. After having ground the first two goblin squads into a fine mulch, I closed the drawbridges at both ends of my trap corridor, and filled it with water from a reservoir I had placed above in the event I wanted to drown a particularly annoying frog-like invader. So I sealed it up, filled it with water, and managed to drown a lone axegobbo who was chilling on a spent cage trap. Amusingly enough, the water washed him into one of the adjacent serrated disk traps, and he started panicking between fighting the current onto the cage trap and being mulched on the disks. Eventually he just drowned I think, didn't bother reading the combat logs once the archers started chipping bones all over the place.
So I let him stew in there, while his buddies started assembling on the outside of the first drawbridge to the fort. Now normally I would drain the water over the other drawbridge, which has access to a brook for drainage, but instead I decided to let the water spill out the front of my fort to the feet of the remaining two goblins squads.
The gore is glorious. It's not water draining, it's pure blood, with goblin arms surfing the hideous tide to give the remaining invaders a high-five.
I love Dwarf fortress.
Update2: The siege is now broken. An entire squad of goblin spearmen, in addition to almost all of the blizzard men, AND a squad of trolls, all left without fighting. Hell, I raised the gate and started collecting the goblinite before they left! There's one blizzard man left that my marksdwarves used as practice. He's unconscious, both his arms and both his legs are cut to shit from my bone bolts. Time to see how tough these things really are.
From this battle, I have learned two things:
1. The trees around my entrance seriously need cutting. The gobbos were hiding behind them fairly effectively, and even with a Z-level of vantage on them I don't know if my marksdwarves had a good shot.
2. I need to extend my marksdwarves' range of fire. They can't hit anything directly in front of the gate...