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1.
to whibble is to use (ideally) 2 fingers and vigorously move them in a horizontal action to create a pleasing wobbling action. Breasts and bum cheeks are the usual ideal targets, however, it is only limited to your own imagination.
I was quite shocked to find Amy being whibbled again by a complete stranger.
by dodgywhibbler August 17, 2008
 
2.
to put ones finger into a ladies cleavage and move them vigourously - thus whibbling her breasts and jiggling them
I whibbled her
by whibbler1 July 25, 2008