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The investigation of a turd left in a toilet which is not flushed, nor overtly claimed. Typically of identification is performed with a certain standard of care and the term more commonly applies to voluntary investigations.
Mother: Who left the present in the toilet?

Father: I have done my deuce diligence and determined that it was Kendall who left the kids in the pool to have someone else drown.
by the coMANd'r August 28, 2014
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