The Yorkie is a chocolate bar that is sold in the UK only (I think? I'm not sure) and is quite chunky in terms of the amount of chocolate you get per chunk. I

The Yorkie is a chocolate bar that is sold in the UK only (I think? I'm not sure) and is quite chunky in terms of the amount of chocolate you get per chunk. I think the reasoning behind the marketing 'it's not for girls' was because in the 80s/90s the best selling chocolate bar in the UK (and still is) is the Cadbury Dairy Milk and their marketing campaigns pushed the bars as being a woman's best friend, which I guess Nestle felt there was a gap in the market to push a so-called 'manly' bar of chocolate. I guess you could compare it too Diet Coke vs. Coke Zero. It's kind of hard to explain and from an outsiders perspective it does seem wildly offensive to women, but here in the UK it's more of just a bit of humour that people don't really take too seriously