Ditch
Imagine you're driving and there's some dirt with a flag in it near the exit ramp. That flag marks a ditch running alongside the road. Don't try to exit the road here, or you'll end up stuck in that ditch.
くつ
ほり
None
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.