Mysterious garage

Sunday night, kids had gone to bed. Mich and I were relaxing with a movie - she had spent the week camping with the kids and some friends, so was understandably tired; I had run the Lake Tahoe Marathon that morning. We weren't in full brainpower mode. Lara Croft: Tomb Raider seemed right up our mental alley at that point. During one of the quieter non-fight scenes, we looked at each other and said "Is that our garage door?" We somehow managed to peel ourselves off the couch and check the garage - sure enough, the door was open. While our fatigued brains were still processing that, the door started to close by itself. We hit the button to stop it and raise it up again, then started to wonder if there was someone hiding in our car with the opener or what? I walked out to look around, and when it started closing on itself again, jumped back inside to hit the keychain opener button that should have been hanging on my motorcycle. It wasn't there. That's when I remembered - I had put the motorcycle keychain in the sweats I wore to drive up to Tahoe in the morning, so I could close the door after I left in Mich's car. When I got home, I dumped all my running stuff right in the washer. Apparently the keychain garage door opener was shorting out, and opening and closing the door. I took the battery out, let it dry overnight, and it works fine. Whew!