power trip (noun)

1. In the cartoon, the villain goes on a power trip and tries to take over the world.

2. The comedian told a joke about a boss who goes on a power trip and starts bossing everyone around.

3. The fashion designer used her position to go on a power trip and dictate all the trends in the industry.

4. The horror movie depicted a character who obtains supernatural powers and goes on a power trip, terrorizing the town.