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Thats when a person jacks off repeatedly all day. For an example when you are in prison and the dude watching the lady in the booth jacking all day you would say that niggas been madjacking all day.
When you are in prison and the dude watching the lady in the booth jacking all day you would say "that niggas been madjacking all day."
by Ricktrocious May 24, 2018
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