A portmanteau of "post" and "vacation". In message boards and forums, when a person or group of people who had been posting in a particular thread quite a lot suddenly or slowly stop posting for a period of time, usually with no explanation. During postcations, threadjacking may occur, but is usually crushed by forum moderators.
xxxKewlGai1132xxx: Hey, I haven't seen MeatMuncher521 in this thread for a while.
NotaNEWb: Oh, yeah, he and ShadowXcool are on postcations.
Taking an extra long time in the bathroom while pooping. Poopcation entertainment comes in the form of texting, reading, draw something, and other such phone activities.
M: I was reading online about poop and it came to my attention that it may not be healthy to hurry while pooping.
J: Yeah I have always been a fan of the poopcation.