I've given myself several headaches trying to figure this out.
  1. How was April O'Neil's father a brilliant scientist, but could not figure out a better way to destroy everything in the lab than to start a fire?
  2. Again, April O'Neil's father was a brilliant scientist. If setting the lab on fire was the best solution he could come up with, how did he manage to kill himself in the fire? He's mutating turtles for God's sake, but committing arson is hard?!
  3. Who starts a fire with their child in the building?
  4. Where do the Ninja Turtles get their money to pay for the pizza?
  5. How do they get the pizza? Is it delivered to the sewers? What kind of pizza delivery person is like "Yeah, let's go to the sewers and drop off a pizza to talking turtles."