Don't you just hate it when you fall for advertising bull?

You think you're so streetwise and clever and you can sneer cynically at those ridiculous car ads on TV all you want but one of the pesky little sods always gets through.

I can't tell you where I saw the advert - because that's the insidious nature of them isn't it... they lodge in your subconscious - but suddenly I was aware.

Muller light vanilla yogurts with dark chocolate sprinkles.

And I was curious.

So as I'm cruising the aisles of Sainsbury's looking for a pre-spinning snack, I spot them. Hmmm... 54p, should I maybe buy four for £2? Will I like them?

So I get to the office and I take off the lid and I stare, suspiciously, at the pale gloop with the faintest brown spots. I stir with my teaspoon. No hidden corners of dark chocolate. This is it. I taste the bit with the brown speck. No chocolate - at all. Not a hint. Not a wispa (sorry... couldn't resist).

All I could taste was yogurt and sweetner.

Rotten swizz.