What you have to do when you have toilet
paper in the house but not in the bathroom and you only realize that after you've shit and you're home alone. Essentially waddling to wherever you keep the toilet
paper with your pants and undies at your ankles and shit on your ass and then waddling back hoping no one sees you like this.
The "Donald
Duck" part coming from the fact that you're most likely Donald Ducking while doing this
Eric realized he had to restock the toilet
paper after he took a Taco Bell shit, thus he now has to either make Donald
Duck's Great Journey or wait till someone comes home.