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A word of exclamation to be employed when one is socially obliged to say something but isn't sure if he or she should respond positively, negatively or neutrally. When one wants to show something is notable but lacks infomation on what attitude to form about it.
Husband: How was your day, honey?
Wife: It was pretty average.
Husband: Yaffle daffle.
by Honourmemberofyd May 11, 2009
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