Me: "Alright, if you roll high enough you might be able to avoid crashing into the undead dragon with your air ship"
Party leader: "Can I use my profession sailor to put on a burst of speed?"
Me: "Sure, why not."
Party: "We hit the ships engines with lightning bolts to super charge them!" (It was previously established this worked for some reason)
Party Leader: *rolls a 20* "We ram the dragon at top speed!"
Me: ". . . "

It died.