I'm a clumsy person, so it's not unusual for me to stumble in the street. Most of the time people don't notice, but it's still quite embarrassing. I like to take my frustration out on imaginary loose paving stones and things, rather than just admit I can't keep my balance.

I also lean back on my chair a lot, but I don't think I've ever fallen off before. It's only a matter of time, I guess.