A technique employed when one finds oneself taking a crap and the toilet paper is almost completely gone whereby the crapper most make complete use every square inch of toilet paper in order to make an effective wipe before the end of the roll.
An expert at The Conservative makes the clean wipe (to verify all poop is gone) with the remnants of toilet paper that remain on the roll after the last sheet is removed.
"I went to take a crap and realized that I was almost out of toilet paper"
"Oh shit! Get ready for dingle berries and skid marks"
"Nah, I am a pro at The Conservative; the last piece of toilet paper was the clean wipe"