1) (common)To clap 2 chalk board erasers together to clean them and create a cloud of chalk dust, often fun when students are board.
2) (slang) To clap dem cheeks of the class slut.
1) Hey Tom! Go outside the class and clap the erasers!
2) Damn Tom, you really clap the eraser! Dude shes a hoe anyways.
When I went to school in the 30’s, at the end of every day a couple of students were assigned to knock that day’s build up of chalk dust from writing on the blackboard. So, they would go outside and clap two erasers together for a couple of minutes to knock out the chalk dust.
The means by which thoughts are fleeting. The same mechanism that erases dreams works throughout the day, erasing that which the mind doesn't find important.
His dream eraser made it so he exhibited confirmation bias about the situation. He only accepted that which coincided with his beliefs and rejected that which didn't. These people are hard to convince.
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.