Absurd, ridiculous, nonsensical, unlikely, and/or untruthful things people post on Facebook.
Tiffany just said she is engaged to Darryl's brother and that they have twins on the way. The wedding is supposed to be in April. That's a bunch of facebunk if you ask me!
A hair bun placed on the forehead or below that is both leading edge fashion and functional. In addition to being stylish a face bun will protect you in the case of a door being slammed in your face or the proverbial face plant.
Dude! That facebun is stylin' and it saved you from breaking your nose when a door slammed in your face.
(noun) - A medical condition caused by making out with a guy who has a lot of stubble. Characterized by redness, itchiness, flaky skin, and/or a general feeling of burning on the facial area, especially near the mouth.
"Fuuuck! The guy I hooked up with last night hadn't shaved in three days, and now I have faceburn!"
Plugging in an offensive or obnoxious status update on a Facebook account that has been left open. Sort of teaches people to log off their account when using a public computer.
Don Pedro: Loves guys in tight jeans
or
Martin Barrera: is taking the day off from school to divorce his wife
or
user name: insert random offensive status