Top Definition
utterly mental or possibly furious to the point of no control
'What do I think of George W.? - Mad as a bag of ferrets!'

'Then he told me I was feeble - man, I was mad as a bag of ferrets!'
#box of frogs #bull moose on acid #rhino wrangler #bull dog/rottweiler etc. on pcp #moses comin down the mountain
by Jondo March 04, 2008
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