While in the midst of wiping
one's tush after defecating, the
act of wiping, then folding the toilet
tissue over to reuse it.
Brian: "Man, I was taking a dump in the school bathroom the other
day...and it wasn't a very good
one. I was wiping and wiping and wiping and still had to wipe more but I was running low on toilet
paper."
Joe: "What'd you do....fold and reuse?"
Brian: "Uh YEAAAAAH.....did I have any other choice?!"