facebook fallout 

(Noun) Side-effects or secondary consequences resulting from a controverisal post you make on Facebook.

Dude #1: Hey, did you see that self-deprecating Facebook post made by Kara?
Dude #2: I did, what a nut!
Dude #1: Boy I really wanted to go off on her and comment but I didn't want to deal with the Facebook fallout!

facebook fallout by WFHbuddies May 8, 2011

Facebook Fallout 

The ridiculous amount of notifications and messages recieved after any social event

JEff: 'Awesome party last night, you should have come'
STEVE: 'yeah but look who's wading through the facebook fallout now'

Facebook Fallout by a non in mousse July 15, 2011