It doesn't take a lot of thought to see where this is going. Sex still sells.
These ads are just a couple Wilkinson's ads for their bikini line razor that ran in the UK. I'm not sure they could get these on the air in the US and no reports here about how effecive they were, but they certainly grab your attention.
Bikini line laser hair removal is, if anything, growing in popularity. (Underarm / bikini line / lower legs are probably the top three. )
Here is A clever and funny print ad around the bikini line from Veet and a number of other bikini line ads for various products.