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2.
Being in the process of becoming a dark sider. An art only possible at a federal academy. Sleeping and or having a relationship with a female academy attendee is dark siding. The occurrence is due to someone no longer being able to go without getting any, often times it is safer to sleep with your own hand. Correction it is always safer to sleep with ones own hand.

Reference dark side definition #3 and #6
john doe has been dark siding for quite some time with jane deere

Why the hell would you be dark siding?

Masturbation is better then dark siding.
by kper May 20, 2007
 
1.
The process of negging off over something to the point that you are fully sided out. Often Darksiders are quiet, moody and confused.
'I'm fully siding out'

'Mate, don't go all darkside on me'

'I'm completely darksiding about it'
by Prophet of the Dark Side March 26, 2010
 
3.
A state of inebriation caused by mass amounts of mind altering drugs and Pink Floyd's Dark Side of the Moon.
Friend one: Last night was crazy, I can't believe I walked home without shoes in the snow.
Friend two: Yeah man, you were so darksiding.
by Beree October 05, 2007