Mark Smith wrote:It is interrupting an automatic action in a way that confuses the victim and leaves them open to suggestion and instruction.
Say for example someone offers their hand to you, you go to shake it, but then they tie their shoelace instead.
Your brain is used to working on automatic but gets thrown off balance.
You can use things like that to make people open to suggestion, for example, when you shake someones hand quickly move their wrist to their forehead and appear to fall into a trance. Their confused brain will sort of... follow on.
That's a pattern interrupt

You wont find much better anywhere and it's nothing - a rigmarole with a few bits of paper and lots of spiel. That is Mentalism
Tony Corinda