[ghaff]

Video is probably actually appropriate for this:

https://www.youtube.com/watch?v=r6Iqn6mdmSs

[beardedwizard]

In which of the 21 minutes of tech talk does this person actually fold a sheet?

Here is a video of someone actually folding the sheet as the parent requested: https://m.youtube.com/watch?v=ckTCocBCUN4