Use "jounce" in a sentence

1. seat, then began to jounce around

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2. He liked sitting there stoned and pretending not to watch her tits jounce around like grapefruits in a sack

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3. But those books are now only fifty-pound cartons that jounce around dangerously with every pothole and keep the van from attaining a top speed of more than forty-seven miles per hour

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