Its when you carefully place toilet paper down in the toilet before you use it. Then have a bowel movement on top, then wipe, put it down. Then move your bowels yet again, wipe, and put it down. continue to do this untill you have about Five to Six layers, and you will have your shit lasagna. (for looks eat a can of buttered corn about 15 hours before you attempt your shit lasagna.)
last night i was bored, so i decided to make a shit lasagna.