What is Jack-bunny?
1.
verb. To sneak up on somebody from behind, and very quickly stick one's index and middle fingers up his/her ass (or the ass area, if the person is clothed) and then move the hand in and out as fast as possible. Generally, the intention is not to penetrate but to startle.
1. Tonight, when you are sleeping, I'm gonna jack-bunny you!
2. You got jack-bunnied, haha!.
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