You may want to review this ad.

[hafrogman]

I don't know how much control you have over the individual advertisers Google puts in the banner ads, but you may want to talk to them about this ad that I've seen a few times now.

Edit: ad has been removed.

 

[Morrus]

We have info here about which ads are selected by Google for you.

Thanks for the link; we can ask Google to block NSFW ads.

 

[Scott DeWar]

now that the ad is dealt with, you may want to remove the above thumbnail.