1. The catchphrase of the two switch maestro penguins in their advert.

2. The last, vain attempt to get a laugh once a joke has gone flat. Usually unsuccessful.
1."Dum-dum-dum-da-dum, Rut-tut-tut."

2. "and then the French guy says 'deoderant, what's that?'. Heheh (awkward silence). Umm.. rut-tut-tut?"
by Brentmeister May 21, 2005
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