The sign above Piccolo's (Porco's engineer) desk reads (in Italian): NON SI FO CREDITO. No credit.
(After Porco and Fio got Curtis to pay Porco's massive repair bill)
Fio: Porco! I screwed up!
Fio: We should have padded the bill!
Porco (grinning): You're right!
Pretty much the entire scene involving the schoolgirl hostages is funny given the fact that a bunch of bad-tempered criminals are forcibly restraining their tempers for the sake of a dozen 6-year-old girls, and also being criticized by the girls at every turn. However, the crowning moment is when Porco is forced to tow the girls back to the ship on a plane in the ocean with a crapped-out engine. The girls, having jumped overboard after the pirate plane crashed, begin running around in their underwear, their wet clothes strung up between the planes wings and engine.
Porco: Hey, quit running! Settle down! Put- put your clothes back on!