Slang term used by people located in North of Mexico to describe something that is really cool, great, or awesome. Something incredible and you can believe it exists. The word in English language is "Sickness"
La fiesta que organizamos esuna enfermedad impresionante...
A portmanteau of the english ‘infernal’ and the french ‘enfer’: enfernal (and its adjective and verb tenses) connotes a double or extra-hellish thing, place, or event.
The hopeless feeling you get that you've been in this situation before. Possibly several times. Usually referred to in reference to reoccurring business meetings.
Upon listening to your coworkers drone on about the same old topics at yet another mind-numbingly reoccurring meeting, you suddenly realize you are experiencing deja d'enfer. You've been through this hell before... several times.
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.