If you ever meet the Devil on a darkened road, don't try to trick him into climbing a tree.
Otherwise, you might end up like Irish folk figure Jack O'Lantern.
Modern day, intricately-designed pumpkin creations certainly make for impressive decorations. But back in the day, folks in Ireland dubbed their carved, fiery turnips "jack-o'-lanterns" thanks in part to an ominous legend.
One night, a conniving local drunkard named Jack trapped the Prince of Darkness in a tree by hacking a sign of the cross into the bark. In exchange for letting Satan climb down, Jack had him vow to never claim his soul.
Jack proceeded to act like a jerk his whole life. When he died, he sure as heck was not allowed in heaven. So he tried to return to his old pal, the Devil. But Satan upheld his end of the deal, hurling a piece of coal from hell at the dead man, for good measure.
Left without anywhere to go, Jack placed the blazing coal in a turnip to use as a lantern. The dead man then set out, doomed to wander until he can find an eternal resting place.