In 1994, at the height of the MLB Albert Belle Corked Bat Controversy, my siblings and I emulated the pros by corking our whiffle bats during a neighborhood home run derby.  Our intention, however, was to make the bats heavier, unlike Belle who sought to make his bat lighter with cork.  Stuffing our bats with sticks worked well, and no one questioned the duct tape re-sealing our bats until one tragic at-bat when we decided to see how “corking” our bat with water would result.  Our opponents became suspicious when, at the swing of the bat, there was a sloshing sound and a spray of water as the bat began to leak.  Result:  suspension, 7 games. ~AKH