A unit of excrement that forms a bulbous shape, which comes out large end first, causing pain in a short sharp burst.
'You Ok in there?'

'Shit no man, this Ass Turnip is ragging my asshole something rotten'

'What were doing last nite? You were pretty late man!'
'Got caught on the bog, was getting pretty reluctant to unleash this Ass Turnip'
by RobMan2008 May 26, 2009
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