Drop a Deuce

To defecate . To relieve one's self by fecal expulsion from one's anus. Origin: the frase could have been allocated to this meaning due to the assertion that the dump would be or feel like it was a two pounder. Hence the word 'deuce'. Or, the more commonly accepted origin of this frase is a response to a euphemism for taking a crap: 'going # 2'.