n. One who packs any object into his or any other mans rectal cavity. Generally one that is called an "ass packer" is known for engaging in intercourse with another male (i.e. fucking him up the ass) although the penis-to-anus contact is not necessary for one to be dubbed an "ass packer"
"Sam Compton is such an ass packer. He'llstick anything up there"
The 375ml bottle of liquor available for purchase. It is small enough to fit in your back pocket, aka your ass pocket.
Guy: I'm halfway through my ass pocket of Jack daniels
Girl: What is an ass pocket?
Guy: 375ml of liquor, it fits in your ass pocket.
Girl: Well it's not on UrbanDictionary.
Guy: It is now.
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).