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2.
See Poo.
He did a chocolate iceberg.
by Andrew Briggs January 31, 2004
 
1.
When your shit sits in the pan, but there is 3 times more below the waterline than above, producing the same effect as an iceberg.
I used Nicks bog the other night and he hadn't flushed, he left a Chocolate Iceberg that would have been worrying to the captain of any ship
by Streaker30 August 14, 2009