I was on the phone, doodling as you do and when I finished I noticed a pattern had formed. I took the piece of paper home and drew up some steps. I've not seen a pattern like this, and if you have please let me know so I can credit the owner.
It's very easy to draw, just one basic squiggle - like the number 3 and a reverse number 3. There are many possible variations - I've come up with a few and have shown it horizontally, vertically and curvy.
I do hope you have a chance to try it yourself.
Thanks for visiting - have a great day :)
Here's a funky 3sy :)