an adjective used to describe a peron whose actions are silly, this term is in no way to be used as an insult, but in the spirit of playfulness. (not to be confused with the UD definition of dinglenuts.)
He is so silly! What a dinglenut!
by ljs77 April 20, 2011
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When someone acts immature in a serious conversation. Also dinglenuts can be used to describe an individual who manages to screw everything else up for the rest of us.
Conversation: That Austin is such a jerk during physics, he is such a dinglenuts.

Physical Example: That dinglenuts opened up the side of the plane and decompressed the cabin.
by JesterD73 November 26, 2010
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