not just a pose... but a lifestyle. postin up is a privilege not a right. the origin of postin up can't officially be traced but it was believed to be started around the year 3000 B.C. when one posts up they find themselves in a state of relaxation, most of the time arms are folded and back is to a wall. if a wall is not present to "post" on, the postee can still "post up" with their arms folded taking a moderate athletic stance. a postee can not "post up" for more than 1 minute and 17 seconds at a time, violations of this essential rule can result in a loss of post privileges for the rest of said day.
me and my boy wilbert have been postin up inda post up zone.. where you been?
When one has mud butt and is hershey squirting uncontrollably, leading to many trips to the bathroomjust to wipe, generally resulting from drinking very cheap liquor
"I shouldn't have drankall thatArrow last night, i've been postin' up all morning"
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).