Gilligan's dream that he's Lord Admiral Gilligan, fighting pirates (the other male castaways) on his ship in the wildest, wackiest swordfight in 1960s Live Action TV.
The castaways tap into a transcontinental telephone cable, and Gilligan reaches an operator who keeps asking him to deposit a dime.
Gilligan: Operator, listen to me, listen to me! We're shipwrecked, you see, and we found this telephone line, and we tapped into it. And we're on a deserted island, and there's no telephone booth or even a phone!