to fondle balls in one hand, usually by alternating use of the pinky and index fingers to lift each ball in quick succession. The action is similar to the "woogity" greeting performed by the characters on the Nickelodeon show "Rocket Power", but instead of the second party's hand, balls. The action can be applied to other testicularly shaped objects in pairs as well as balls.
"Hey, come 'ere and let me jubble your balls"
"I love the way she was jubbling those kumquats"