My hubby has a habit of dislodging sprinkler heads as he's mowing the lawn and I'm the one designated to repair them. A few weeks ago he did it again, and because I was watching he quickly picked up the sprinkler head and made a half hearted attempt to reattach it. A few days later I did a follow-up inspection to make sure it was securely threaded in place. It was just sitting there, attached to nothing. I picked up the sprinkler head, accessed the damage and noticed a glass lizard coiled within the hole.

He didn't look pleased to see me and it took several minutes of coaxing before all 18" of him slithered away.