Ditch
When you're driving, you may notice the flags in the dirt near the exits. These flags mark the ditch running along the side of the road. You won't want to try to exit the road here or you'll end up stuck in one.
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ほり
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If you do end up veering into a ditch you'll find yourself yelling, "Holy (ほり) crap!" Then you'll go hurtling into the ditch.