Occurs while taking a shit, when by all necessary definitions you have completed your task, but want remain on the bowl to finish the current chapter of the book/newspaper/novel you are reading. Usually last between 2-5 minutes.
Most common in suspense novels and other mysteries.
Roommate 1- "You almost ready dude, we're gunna be late. First pitch is in 20 minutes."
Roommate 2- "Yeah man hold on, quick pre-game dump."
*10 minutes later*
Roommate 2- "Alright let's go"
Roommate 1- "WTF man, you said quick."
Roommate 2- "Didn't account for the chapter delay. That Dan Brown is amazing."