An act of public political disagreement, throwing pies at a speaker.
Ralph Nader, Bill Gates, Bill Kristol and numerous others have been victims of pieing.
by prettybored5 December 25, 2008
1 more definition
Pieing is a verb that means that you could be doing anything.
I took my dog for a walk and he started pieing away so I had to run after it. ( pieing replaced the word running)
by Randomizerrrxx November 06, 2014