Just the other day, I went shopping at IKEA, and in the self-serve area, I managed to grab a shopping cart that had one of those wheels that seemed to have a mind of its own. Every time I hit a little seam in the concrete, the cart would dramatically swerve off in the direction of the rut. It ended up being more of a workout than a shopping experience. 

Now, I suppose that I could have kicked that wheel repeatedly until it fell off, since it was causing my cart to stumble, but in the end, I just kept pulling the cart back into alignment. It was more work, but I was able to keep the cart in one piece that way.