Gilligan's Island 3x26

After Gilligan saves a beautiful native girl from drowning, she vows to be his slave forever. Later, her ex-boyfriend comes to the island and challenges Gilligan to a duel to the death. The Professor concocts a drug to cause Gilligan to fall into a catatonic state, so that the natives will think he is dead, but they then insist on a native funeral . . . by burning the body!