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1.
To urinate. Derived from the term 'Chuck a Piss'. The term references the popular actor Chuck Norris.
"I just drank 3 litres of Coke and now i gotta chuck a Norris!"
by Flynn Bakalaknabar March 28, 2008
 
2.
"Chucking a Norris" is another term for taking a shit. The legend goes, Chuck Norris once tried to coin the term "Chucking a Norris" to mean pooping, but everyone he said it to called him an idiot. Since he was Chuck Norris, they decided to humor him.
"I'm going to go chuck a norris. Anybody know where the plunger went?"
by ChuckedTheNorris May 16, 2007