Grieffon wrote:It's from the Celestia micro comic.
I don't get what the old sock-wearing pony is referencing, but I recognized Huey, Dewey, and Louie right away. I love the attention to detail on their cutie marks as well:
A Trumpet for Louie because of Louie Armstrong.
A card catalog for Dewey because of the Dewey Decimal System
I can't tell what the heck Huey's is, though... some kind of elephant? Baby Huey, another cartoon character?
Technically the nephews were actually named for Huey Long, Thomas Dewey, and Disney animator Louis Schmitt, but it's funny, nonetheless.