Ah yes. The philosopher's sock. Sockrotates.

The skin mites on your left foot socialized and joined forces to shift your sock so they could share the most nourishing parts.
The right foot's ones may be more individualistic.

that's a special feature of hanes socks from walmart.

Finally, some dull content!

The sock topologically rotates because it remembers the wash spin cycle and the dryer.

It becomes entangled.

Socks which disappear in the dryer, well, they just do the equivalent of rotating beyond gimbal lock, in hyperdimensional space, of which our reality is merely a 3D shadow.

... the 'quantum spin' theory of 'socks doing somewhat odd things'.

You need to buy a new foot.

Just get a new foot so this stops happening. I have some old, discount feet if you want one for cheap. Most are Australian, though I do have some Maltans in here, somewhere.

This is due to the Coriolis effect. In the northern hemisphere the sock rotates clockwise, and in the southern hemisphere it will go counter-clockwise.

It's actually your foot rotating inside the sock.

Your socks don't fit. Your right foot may be slightly bigger or maybe sticky?

Think you're due for an alignment

Has the quality of the socks decreased? My last set of those was awful. (Switched to Tesco's workman's socks, last forever)

My right sock does it! Sock bros

Your left sock doesn't follow earths rotation.

Toe socks! (Also available in non-rainbow)

Looks like you're making too many left turns.

How you walk as well maybe. Get scientific about it and keep a notebook where you track the position and what you were doing at the time.

If you are lost in the woods just follow the direction of your left sock otherwise you'll end up walking in circles. /s

Foot rotation syndrome

There's a small beetle living in your shoe whose sole job is to slightly inconvenience you in any way possible. It has arrived on this method of podiatric torture.

Buy smaller socks?

You may pronate on one side. It could be fixable with orthotics.

Your big toe is laughing at you.

I have a brand of shorts (Lucky) that I liked so I bought another pair several months later. Both rotate to the left during the day, about an inch and a half. No idea why. No other shorts I own do this. Is there a kinesiologist with a minor in sewing that I could talk to?

You said "how you sit" which makes me think you're not walking much. Do you rub your feet on the floor, carpet, shoe, other foot, etc? Stimming like that can rotate my socks, but I don't have it happen when walking. I don't exactly rub them in the same way

OMG, it's THOSE SOCKS

I have several multipacks of those, and while some of my other socks rotate around some, those light grey hanes with the large red letters will not stay put.

Your left foot is a fan of Bonnie Taylor. This is normal.

Is this inside your shoe or walking around in your sock feet. One of my feet turns out a bit (maybe due to a knee injury when I was a kid) and my sock would do this.