And I thought it was just me. I imagined that I was the only one who did it. I suspected that it was just something that amused me, and me alone.
I appear to have been wrong.
Driving home this lunchtime, I was listening to the radio and the presenter read out an e-mail from a listener. About how, whenever they were using a particular feature in MS Windows, they found themselves singing a 25-year old Clash song.
And I was punching the air, going: "Yes! I do that too! So it's not just me!" Which may have affected my driving just a little.
Those of you who still don't get it (and are Windows users) hover your mouse over the blue bar at the bottom of your screen. Right-button-click. Take a look at the options available.
And if you still don't know what I'm talking about, click here.
Does anyone else out there have similar peculiarities, I wonder?