Futurama Episodes

The Professor sends the crew to planet Trisol for a delivery. Bender finally fulfills his secret dream of being a chef and prepares dinner for everyone during the trip. When they arrive, Fry is instructed not to touch anything, but Trisol is sweltering and Bender’s salty meal has made him even more thirsty. When he arrives at the palace, he spots a bottle of water by the throne. He quickly finishes it off as two pools of water morph into two guards. They inform Fry that since he just drank the emperor, he will be their new ruler. Unfortunately, his reign may be shorter than originally implied.
wikipedia.org summary:
Fry is sent to make a delivery on the planet of Trisol, but is stricken by extreme thirst after traveling on foot under the planet’s three blazing suns and drinks what appears to be a bottle of water. It turns out that the “water” was in fact the emperor of the planet’s liquid-based inhabitants, and Fry is declared the planet’s new emperor. Before Fry’s coronation, Leela tries to warn him that each of the planet’s emperors have been killed and succeeded on a weekly basis, but Fry refuses to listen and Leela vows to never help him again. When the sun sets after Fry’s coronation, the Trisolians begin to glow, including the previous emperor, who is still alive in Fry’s stomach and orders him to be cut open and drained. Leela ultimately decides to help save Fry from being killed by beating him up, causing Fry to weep in pain and gradually cry out the emperor.
imdb.com summary:
Delivery Boy Philip J. Fry is promoted to Emperor after accidentally drinking his fluid-based predecessor.
Next US airings:
tv.com summary:
The crew visits an arid planet in the Galaxy of Terror distinctive for its three suns and liquid alien inhabitants. Fry, after delivering a package under the scorching heat, quenches his thirst with a bottle of cool blue liquid. Fry soon finds out he drank the planet’s royal leader and is named the new emperor. Fry abuses his newfound power, even appointing Bender second in command, until the aliens retaliate and the real battle for power begins.