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1.
A Facebook Slagger is a person who is never online when needed, for example a Group chat where a topic is getting discussed or if hes just not online when all the other Brochacho's are going nuts on Face.
Brochacho 1: Dude, Frank is slaggin again.

Brochacho 2: Yeah, i just noticed; hes such a Facebook Slagger !

Brochacho 1: Totally !
by ThelittleGumbas August 03, 2011
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