Royal shocker: Kate Middleton & Prince William break rules once more

Prince William and Kate Middleton shocked royal fans with a daring move.

The couple accepted a mysterious gift from a fan during a walkabout.

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The Prince and Princess of Wales greeted the public at a Coronation Big Lunch.

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The Prince of Wales sipped from a cup containing a mysterious drink, breaking royal protocol.

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Kate also tasted the drink before the couple shared their experience on Instagram.

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Media reports suggest that the royal protocol is in place to prevent poison attempts.

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The couple's move has left fans in disbelief and admiration.

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