Kidnapping

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You've kidnapped a luscious young victim and are holding them for ransom.  The family and police are demanding proof of life before agreeing to pay up.  You point out that the victim is excruciatingly ticklish and go about proving that they are alive by letting them here the screams of laughter as you tickle the crap out of them.

You can also look at the kidnapper being caught and "punished" later on if you like!

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