hahaha me too ! IIRC it was from some kind of "Show HN: What can I learn in 5min" And for the knot, it was maybe https://www.fieggen.com/shoelace/ianknot.htm but not sure.

Fellow late granny knot lover, I see...

I got some remarks when I was young that I am tying shoe laces wrong. Never cared about that, but it turns out a lot of people do that incorrectly and not for the reason I was laughed at.

My shoes don't get untied anymore.

Please post back.