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1.
The art of belittling someone, in order to make yourself look more appealing. To make ones dick look smaller than it is.
(just like it sounds!) Used by assholes the world over in an attempt to make their "dick" appear larger.
That asshole is a master of shriveldickery!
by Richard Fittswell Upinya February 16, 2012
 
2.
the act of bad mouthing, or shit talking someone in order to make ones self look better.
that asshole is a master of shriveldickery
by DickFittswell April 08, 2012