Gas lighting me?
I 've had some strange things happen recently with my bikes. A few weeks ago I took my fat bike for a ride and when going into the lowest gear the chain would go into the spokes. It happened a couple times before I stopped to investigate and the low screw on the rear derailleur was way off, by at least 5 turns. Simple fix.
Then yesterday I noticed my MTB had a complete flat on the tubeless set up. I took a look and the threaded washer that holds the valve in place was loosened at least 5 turns.
Again simple fix, I know things loosen but have never seen screws loosen that much. I am going to give the full over on all my bikes, you never know.
BTW, I live alone