look up any word, like lemonparty:
 
2.
When ones facebook is left unattended around friends, and every creative bone in the young adults mind focuses on destroying the integrity of tthe social networking medium. Slander, sexually explicit profile pictures, changing language汉语/漢語 and alot more friends from saudi arabia are all hilariously funny. dont complain, retalliate, come back bigger and more creative. and so the sport of FaceMucked was born
(brendan) Yo Trevor left his Facebook open

(mike) ITS TIME TO GET FACEMUCKED

(brendan) Should we change his status first or his language?
(mike) Dont forget to message his aunt and uncle, make sure they think hes gay!
by LAURIER_GOLDENHAWKS March 21, 2011
 
1.
v. The act of leaving ones facebook alone and unattended around drunk, creative young adults with nothing better to do than fuck with each other. The consequences can be devastating. Changed names, relationship statuses and your grandmas photos fro her trip to the bahamas are all free game. One can only untag, apologize, explain to your aunt why you "liked" anal sex and move on. Turn facebook into fun with Facemucked.
Shit i left my facebook open and i got FaceMucked!!!!!
by BGTheFaceMucker March 07, 2011