Top Definition
A culmination of 5+ people's shit in a small toiler that has not been flushed, resulting in extreme blockage. The manual process of unblocking the toilet with the use of a soup ladle, creating a casserole-esque substance and a heightened smell of extreme sewage poo.

Best served cold and fermented. A Dutch speciality.

Disclaimer: High risk of losing your deposit.

synonyms: #asscass
''Chris, did you just shit on my original Blockage?''

"Na Jukes, but we've created an all mighty Arsehole Casserole"
by ThePooProfessor October 19, 2013
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