A Facebook Hashtag is seemingly pointless as a hashtag used on Facebook doesn't fulfill the typical function of the metadata tag. In all reality, it is a delightful little tool that is used to annoy and troll the masses-- most commonly those of the Stanley kin.
(Facebook Hashtag)
#eatingasammich
"YOU'RE STILL USING HASHTAGS ON FACEBOOK???! RAGE!!!!!!!1!!ONE!" -D. Stanley
#eatingasammich
"YOU'RE STILL USING HASHTAGS ON FACEBOOK???! RAGE!!!!!!!1!!ONE!" -D. Stanley
by xx2112xx May 25, 2013

when you're so bored whilst looking at facebook that your eyes just phase out and wander over your computer screen, until you notice your favorites toolbar and see the link to facebook and think 'ah, facebook; that will alleviate my boredom', and clicking it raises you mood ever so slightly until you realise you have in fact just double facebooked yourself.
Tom: 'dude, where were you last night? we had an awesome house party with about thirty people here, it was legendary'
Dick: 'what party?! no one told me about this! i thought you were having a quite evening in with harry!'
Tom: 'we were, but then we decided to have a party. sorry man i thought harry told you.'
Dick: 'i am so angry about this, last night i was so bored i ended up double facebooking myself like three times.'
Dick: 'what party?! no one told me about this! i thought you were having a quite evening in with harry!'
Tom: 'we were, but then we decided to have a party. sorry man i thought harry told you.'
Dick: 'i am so angry about this, last night i was so bored i ended up double facebooking myself like three times.'
by the fierce cactopus August 25, 2010

Having two browsers open with Facebook on both. Commonly used when playing multiple facebook games, or by forgetting that you already have facebook open.
guy: How do you manage to level up all your facebook games so fast?
guy 2: It's easy, you just use double facebooking!
guy 2: It's easy, you just use double facebooking!
by Addicted2Facebook December 20, 2009

Ted: that jimmy kid really likes your pictures
Mickey: yea he has facebook profilia for you, i hope hes not homoprofiliac for me...
Mickey: yea he has facebook profilia for you, i hope hes not homoprofiliac for me...
by vietnamese manofwar March 3, 2011

To aimlessly browse Facebook with no explicit intentions; checking "updated friends," looking at pictures, writing on walls, playing with applications, etc.
by Renee K January 11, 2009

by Carter Zoolander October 30, 2011

Tyrone : Yo swear down bruv, James is always on facebook.
Reece : Yeah innit he's a facebook warrior.
Reece : Yeah innit he's a facebook warrior.
by Chei October 19, 2011
