Top Definition
A particularly large and pleasing turd, that has been gestating for a week or so in the bowel area; also a derogatory term of endearment.
1)Alan you fucking arse marrow, where's my screwdriver.
2)My butt is hanging in tatters, you should have seen the size of that arse marrow!
by PJ January 01, 2005
2 Words related to arse marrow

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