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1.
Ehad - stands for Eight Hours a Day, first used when revising/studying for exams however now used in many applications
"Come to the cinema tonight?"
"Nah mate I'm revising"
"Dude you've been revising all day stop being an ehad"
by ggoucher June 05, 2014
 
2.
Internet jihad, holy war, or just an attack on a group of some sort. Not neccessarily hacker related.
OMFG lets declare e'had on the RIAA.
by Digital Religion May 01, 2003