sandwich diaper

a paper towel, napkin, tissue or other disposable article used to wrap the bangin' sandwich you just made in place of using a plate. typically used because you are too lazy to wash dishes or too poor to afford them in the first place.

Jess: "wow i'm making a really good sandwich."
Sherri: "do you want a plate to enjoy your delicious creation of culinary genius from?"
Jess: "no, i'll just wrap it in a sandwich diaper. i'm much too baked to wash dishes tonight."

Poopy Diaper Sandwich

A sandwich comprised of a diaper full of excrement
or
A sandwich that tastes absolutely awful
or
Rogue poop sandwiched in-between ones butt cheeks

I just farted and pretty sure I have a poopy diaper sandwich