Top Definition
When a group of individuals, the majority of which are within an arms length of each other, are engaged in a raging Facebook troll battle in the comments sections.
Oh wow, those to guys sitting there are totally facebiangling their friend.

Look at at that facebiangle! So funny.

"You guys are sitting right next to each other, why are you ganging up on that poor Facebook soul?"
"It's a Facebiangle bro... can't stop the troll".
by Blah_Blah_Blah_Blink_Blah May 27, 2014
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