It could be on top of your desk, for instance...
You know how the lenses react when you open and close the battery or memory card door, while your camera is off, right? They extend and retract a little.
Last week I went for a stroll with a camera, something I haven't done in years. Usually I don't shoot 35, so I decided to take it as main lens, that day.
I didn't put the JJC lens hood on. I barely use this lens, might as well try making it simpler. Plus, the hood is weird anyway.
5 minutes on, I take the RP out of my shoulder bag, and the lens is like this.
It would have extended completely, with a little more time. This is the worst lens I have regarding lens creep.
Later, I get home, put the camera on my desk, remove the SD card, close the battery door, hear a weird noise, and then I realise the lens is trying to extend while the camera is on top of it. I had put the camera face down, without lens hood.
I just said in my language "I had forgotten why I hate this lens...".
Yes, I have other external focusing lenses, the 16, the 28 and the 50, but the 28 is too small to put the camera face down, and I always use lens hoods on the others - they're too small to put face down without hoods anyway.
With the exception of the 16mm, that I actually use for work, I own the 28, 35 and 50 for personal stuff.
I work mainly with the 28-70 and 70-200, two somewhat big lenses, so I usually put my cameras vertically on the table, it's not on purpose.
Seriously, I'm fed up with these weird designs...