Splinter: Why is the lair on fire?
Mikey: a dragon sneezed
Donnie: tried to light a candle with a flamethrower
Leo: dropped my latest mixtape
Splinter: Raphael, please tell me what happened.
Raph: uh
[flashback to raph arguing with Donnie that it was impossible for a fire extinguisher to catch on fire]
Raph: I don't remember