One of the 3 'Unforgivable Curses' in Harry Potter by J.K. Rowling.
The Imperious Curse is used to take full control of the body of another. As with Avada Kedavra use of this curse will have you placed in the Wizard Prison 'Azkaban'
"You will do exactly as I wish....IMPERIO!", The young wizards eyes glazed over and he seemed a million miles away, yet aware of the need to follow and external force.
The right of all bosses to hijack the conversations of subordinates. Said subordinates then mustjust awkwardly stand there while the boss talks to someone else with their back to you pretending you don't exist.
Dave: Then we can do the load testing and...
Boss: IMPERIOUS INTERRUPTUS!
*Dave stands there awkwardly*
Boss: Dave, stand there awkwardly while I talk to Pete as if you don't exist.
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.