Is this the dirtiest M&S ad you’ve ever seen?

Either someone in Marks and Spencer’s marketing department has a very dirty mind, or the supermarket has just gone and made the baking faux pas of the year.

Their new ad campaign turned out to be a little naughtier than we had come to expect from the upmarket chain.

The vitamin-based slip-up was spotted by a Twitter user, and the image has since gone viral.

This isn’t just any innuendo, this is an M&S innuendo…