When a sound (typically a song or speech) is so perfect it overwhelms you with a feeling of strong bliss and pleasure, much like an orgasm... except in your ear.
1. OMG! Alex Gaskarth's (All Time Low lead singer) voice is so perfect it's eargasmical
2. That speech was so perfectly orated I almost had an eargasm
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.