Do you know how I know Dave is a madjacker? He has signs over his bed with arrows pointing towards him that say "madjacker."
by Chris Frosh October 04, 2007
by Anonamos February 19, 2013
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 April 10, 2018