Factual error: The movie takes place in Washington D.C, however near the end on the roof, a warehouse in the background says "Van Nuys", which is in California.
Factual error: The movie takes place in Washington D.C, however the sequence with Hector Savage held up at his house was filmed in Los Angeles. This is obvious as the sequence features palm trees, and mountains are visible at times.
Answer: Frank stuck a fire hose in his mouth and turned it on, causing Savage to explode.
Brian Katcher
Why couldn't Savage just remove the fire hose, especially when he began inflating with the water? Plus, how could water possibly be spraying from his chest?
Because this a ridiculous parody movie and it's funny.
LorgSkyegon