Whereas 'mad as a box of frogs' clearly isn't that mad as a box is rigid and therefore easy to carry, a BAG of frogs would be quite insane to transport because of all that nutty hopping and ribbiting, it would slip out of your hands in quite an nutty manner.
Person a: See that Glyn?
Person b: yeah, I know him, he's mad as a bag of frogs.
Person a + everyone else: yeah, I agree. Quite barking mad.
by RedPlanetClaire June 09, 2010

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×