The act of taking a massive dump inside a toilet that is already clogged with a massive dump that someone else previously took.
“Hey, Jack did you unclog the toilet?”

“Nah, dawg I was just adding to the pile!”
by Trident of Treason October 2, 2018
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Adding or contributing a small (usually unnecessary) bit extra.
When John decided to help out the cleaning by taking away his rubbish from lunch, he was just adding pennies to the pile.
by Fred Invisible October 24, 2010
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