[gibybo]

The "Invisible Deck" is a very famous trick. It can be purchased[1] for about $10 and just about anyone can master it in about 10 minutes. With the standard method, you don't need to memorize the deck or flip the card.

[1] https://www.amazon.com/U-S-PLAYING-CARD-COMPANY-SG_B002MI1B3...

[rkagerer]

What did you buy today honey?

A box of invisible cards.