Here's A Good Gag If You Go Swimming In A Swamp And When You Com Out You're All Covered With Leeches.

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Here's a good gag if you go swimming in a swamp and when you com out you're all
covered with leeches. Just say, "Hey, has anybody seen my raisins?" (Because
leeches kind of look like big raisins.)
-- Deep Thoughts, by Jack Handey