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.
The tuck and duck is when you hear gunshots and dive to the ground in fear for your life. While diving you tuck your penis between your legs and cry till help arrives.
Shots fired!!!
La'ron: why did you pull a tuck and duck Buffey: because I'm scared like a sissy girl. Please console me and tell me it's gonna be ok.
As the low dog on the totem pole, always getting yelled at, he had to exercise his importance and dominance over a stuffed duck in a very inappropriate manner. So whenever someone is putting others down to make himself feel better, we call that Humping the Duck.
I can't believe how Donald puts everyone down. Trump is king of Humping the Duck.