Definitions by PrimeTimeR

sludge-pumping 

1.pumping raw sewage into or out of a container.

2.takes place during anal copulation when the fuck whos fucking the butt begins the production of anal excrement

"Little Sally was grossed out because she caught a whiff of my shit when I was sludge-pumping her"

sludge-pumping by PrimeTimeR July 20, 2008