A cute video of Prince William rubbing Kate Middleton's back was potentially a secret signal for her to hurry up. The royals have been known to use secret signals in public. Prince William was ...

Pro wrestling may be a world with its own secret signals and, at times, secret language. But for all the terms, jargon, and so on that fans are familiar with, the one they arguably have the most ...

I explain how secret signals have historically saved lives during emergencies.

A cute video of Prince William rubbing Kate Middleton's back was potentially a secret signal for her to hurry up. The royals have been known to use secret signals in public. Prince William was ...