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The act of change information, creating groups, creating events and posting comments on facebook while logged into someone elses account. often sexual in content.

this can be done by finding out there password or using there laptop while they are away from it.

an example of being hackbooked is having all your friends invited to a "hardcore gangbang"
while I was eating dinner my mate hackbooked my about me to "cross dresser".

i got hackbooked on friday night. and now my mates keep asking me if i'm really a crossdresser
by oz man June 05, 2011
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