(1) Last summer, I got a ride home from someone late, and I removed the front wheel to fit the bike in the back of her car. She dropped me off, I put the wheel back on in front of my house, and pushed off toward the driveway. Now, my driveway is set into a hill which rises up to the house on the left, and dips down to the neighbor's driveway on the right, with about a 3' slope of rock to hold it. As I start turning into the driveway, I sense I'm going a little too fast, and apply the brakes. Except - I forgot to re-connect the front brake from having the wheel off!! Down the hill, over the rocks, into the neighbor's driveway. Fortunately, my ride had already driven off, and it was late at night, so no one saw me!

(2) Once on my morning commute, I was wearing loafers that were a little too loose, and one came off in the middle of the intersection. Which was embarassing enough, but of course then I had to walk back out into the middle of the intersection with one sock foot to pick it up!