Poopertunity refers to the opportunity to expel unwanted excrement matter from your rectal sphincter.

Please see the example below.
Jeffrey: "I had a perfect poopertunity yesterday but I missed it because the postman was knocking on my door."
Bonswala: "Yeah, sounds like you really missed the opportunity to expel your unwanted excrement from your rectal sphincter bro."
Jeffrey: "I truly did."
by Captain Paraguay December 2, 2013
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I missed my poopertunity when the Taco Bell kicked in and could not get to bathroom.
by Jinnieninnie February 19, 2021
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The timespan within which the larger intestine is ready to have a bowel movement.
The train was delayed this morning, and I missed my window of poopertunity. I've tried with a bucket of coffee and a cigarette, but now I won't be able to go all day.
by Snigel December 10, 2016
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