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1.
Mostly Northern (england) term esp manchester/lancashire area, to describe someone (usually male) that has no care of the consequences of his actions.
A mad ed would normally do something like stay up all night and carry on drinking when everyone stops.
"yeah he's a mad ed"
by Adam April 06, 2004
 
2.
means a crazy person who does stupid tings, founded by the clipston click
"tom you maded get off that building"
by Tom Hayward and Mason November 19, 2004