Ultrasound by Iain Bailey

So, when did you start doing magic? I like to say 20 weeks. That's weeks, not years. Before birth. Sounds nuts, I know, but stick with me.

You whip out an ultrasound photo and tell folks that's when your first trick happened. Someone picks a card, you swipe the scan through the deck, and voilà, the card shows up on the baby's brain. Yeah, it's strange, but it gets the job done somehow.

Then it gets even weirder. Another person thinks of a card, holds the scan, and, without saying anything, checks the image again. The card's changed to their thought-of card. Honestly, not sure why that bit's so convincing, but it baffles people every time.

It's practical, it's got a cheeky side, and people won't quite know what hit them. Plus, it's a story that'll leave most other party tricks in the dust.