What's every celebrity's worst nightmare? Having someone reveal a secret about you on a talk show has got to be up there.

Harry Connick Jr. was on The Late Late Show with James Corden when he was in for a bit of a surprise. Corden brought out mentalist Lior Suchard to entertain the audience while also revealing some personal stuff about Connick Jr.

Suchard started with some basic mind games, but ended up revealing the A-list actor's PIN number...oops!

Now, whether or not this is actually the number is unknown. But it's the reveal after that which has me thinking it's pretty legit! How does Suchard do this?!