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A particularly runny expultion of arse waste that, although not quite runny enough to be full blown shit juice, has a sludge-like texture, possibly due to a curry eaten the night before washed down with some beers.
"Mate, expelled some rancid arse sludge this morning after that madras last night, i took a sample in a bag if u wanna compare it with yours, we can make it into an arse sludge competition..."
by Will Long December 04, 2007
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