Imsuster is a combination of the words Impostor and Sus which when put together makes Imsuster so when saying "when the impostor is sus" you could instead say "When the imsuster".
The term used for your circle of friends that are close enough to you that they can insult you freely without hard feelings or consequence.
Example 1:
Josie: "Yeah, she called me a whore the other day, but its fine because shes in my insulters circle."
Example 2:
Harry: "God, Haley, you're so fat. You should really get more exercise."
Haley: "Hell nah! You are not in my insulters circle, that is SO not okay." *bitch slap*
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.