inside meme

An inside meme is like an inside joke, only instead of it being a joke created between a group of people, they refer to it as a meme. "Inside", meaning only the creators of the joke will understand it, and it won't be funny or make sense to anyone else until you explain it to them.

Group: And then... HE WAS THE 4TH MONOPOLY!!! AHHAHHAAHAAHHAAH!!!

Guy: What?

*inside meme is explained*

Guy: I still don't see why it's THIS funny...

Group: Are you kidding!? Hahahhahaha!!!