Top Definition
When a squirrel dances and taps his feet to a little tune while his ball bag swings back and forth. or:

When you get overly excited about something but don't want to overtly express your joy.

zone-x.com/deez_nutz as an example
I was chillin when I found out I got the job. All night I was doing the nut-sac-dance!
by T-bone May 02, 2003

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