Treasure found deep in the cavernous anal region of the human wasteland. Most often brown, soft to the touch and warm with a distinct odour which some may find distasteful.

Can be used as a means to subtly convince your girlfriend that poo is a fun thing to play with.

Also known as poo.
Lynne: "why do you like my bum so much?"
Craig: "Cos thats where i find the brown treasure"
by Mr Craig and Miss Lynne August 26, 2008
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