A job which many strive for but few achieve success in. It is called a "Garden Job" because if you are attempting to succeed at this career, you should probably plant a garden to make sure you don't starve. A few examples of "Garden Jobs" would be an artist, a famous actor, a YouTuber, etc. Often many young people have convinced themselves that, despite the odds, they will succeed at these Garden Jobs, only to have their dreams crushed.
Me: Man, Dave needs to get his head out of the clouds. He thinks he'll become a millionaire on YouTube.
Friend: Ikr, he needs to get realistic and stop dreaming about all of these Garden Jobs.
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.