You have to go, it's time to go, and if you don't go then you can't go until the next window.
My poop window is open I have to find a bathroom!
by westhollywooddesk February 23, 2016
Get the poop window mug.
The moment in time when you need to poop and you know for a fact if you do it now it will be a good poop. Waiting past this window results in a less then perfect poop, Usually with not getting it all out or straining harder than you would have had to if you had done it during your O.P.W.
"Gotta go man, just hit my O.P.dubs"

-O.P.W. ( O.P.Dubs) Optimum Pooping Window
by Catrotzuk August 18, 2015
Get the O.P.W. ( O.P.Dubs) Optimum Pooping Window mug.