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jump (one's) bones
slang To engage in a sexual encounter with one, especially in an energetic or enthusiastic manner. Samantha was ogling the waiter and murmured crassly that she'd like to jump his bones. I could tell the two wanted to jump each other's bones, so I excused myself and left them to their own devices.
jump (someone's) bonesVulgar Slang
To have sexual intercourse with someone.