The best example I ever heard of that was a friend of mine giving instructions on how to get to his OWN house, where he'd lived for at least 5 years. He didn't

The best example I ever heard of that was a friend of mine giving instructions on how to get to his OWN house, where he'd lived for at least 5 years. He didn't know the names of the streets around his house, and just told us to turn right after the "lighthouse mailbox". For what it's worth, whenever I'm in that area, I always notice the lighthouse mailbox now.