It's usually blankets that are folded using the chin. Maybe they have gigantic towels.

Step 1: hold up by a short edge, fold vertically. (In half or thirds, your choice.) Step 2:tuck short edge under chin, reach down and grab edges at hip level. (For my body that's dead center of the towel length, but I'm short. You might have to grab waist-high. Check in a mirror and from then on you can do it by feel.) Step 3: Let go with chin and raise center, creating a folded edge. Step 4: reach out over a surface, touch down the unfolded edges and lower the folded edge towards you until it's halfway, then push the folded edge away and lower it atop the other edge.

Nah you probably just use momentum to whip it into the half-folded position. Do you also drape it over your knee?

Some people are slow, so they have to rely on friction rather than inertia to bend the towel.

You have to hold the center with your chin so that you fold it straight

I'm honestly not sure how you fold towels without it lol

Can't relate cause I've gone out of my way to avoid seeing that video. Somehow I've managed to avoid seeing it for the 17 years it's been around — literally half a lifetime ago for me — yet I haven't even seen a screenshot (oh god I'm getting old).

And it's going to stay that way too, lol