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1.
to reinsert a recently excreted turd.
After the proctologist defecated, he quickly realized that he had pooped out the wrong dook. The obvious solution was to refecate.
by Dr. Assman February 08, 2011
 
2.
When you finish taking a crap and you realize about a minute later that you have to go back and crap again.
Oh man, I thought I was done. Now I gotta go refecate.
by McCock, the Crime Dick August 04, 2006