Sainsbury’s patrons were left confused after discovering one unexpected product now comes with a security tag.

Regulars popping in for their meal deals at the supermarket chain might have been surprised to find Red Bull cans secured with anti-theft devices.

The sight sparked debate among members of the Facebook group Dull Men’s Club after a bewildered customer’s posted a photo of the protected energy drinks.

Their post read: “Today was an odd one. I went into Sainsburys to grab a Red Bull and…