Did this over a year ago. Again might not be punchy enough for a poster but it was still fun.
(By the way it's not a real convention, I just made it up for an excuse to cram together as many "Youtube Poop" memes as possible.)
Among these include:
The King's "Mah Boi"
Link: "It SURE is BORING around here!"
All Toasters Toast Toast
Bowser's Sourpuss Bread
Weird volcano from that commercial with the dinosaur
Mushroom kingdom mushroom trees
Those weird squashed avatars with the creepy eyes
The Krusty Krab