Acronym, stands for push button, receive bacon. A pictorial version is found on many public washroom hand drying devices.

Literally everyone, ever. Including the writer of this definition.

False acronym, indicates that the writer must leave to procure a new beer. Combination of the familiar acronyms PBR and BRB.

"probability be right back"
used when you think that you will be right back but there is a small chance that you will not be able to

"Peeing, be right back." A bit more information than simply brb or afk. Used in chats and especially in online games where coordination between players is required.