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1.
To spend excessive time on a computer surfing the net or otherwise investigating something of little consequence, just to satisfy your curiosity. It carries the connotation of masturbation. (used at MIT in the '70s)
Stop frobbing and get back to your work!
by frobber April 05, 2010
 
2.
Facebook-Robbing.
Much more suitable word for impersonating someone else on Facebook, due to it not involving the word 'rape'.
OMG! I've just been Frobbed!

Oi! Who just Frobbed me?

I've just been Frobbing! It says Tiz has skittles up her vagina!
by Frob Lord December 08, 2011