Isohunt (which I have never used, and anyone who says I have used isohunt.com is a big fat liar) has dating adverts. Now, one of them last night was oddly location specific - “Meet Worcester Singles” it said. So I investigated further.
Excellently, the ads are generated automatically on the server. And with tinkering, can be made to say anything you want.
For instance, this.

(http://crtv.mate1.com/crtv/1517/geolocation=infected - Warning! The image above is work safe. The URL is not.)
And by changing the number after /crtv/ in the URL, you can find different adverts for amusing fun. As shown here.

(http://crtv.mate1.com/crtv/1547/geolocation=clap%20clinics)
I don’t know why I find this simple messing with URLs fun, but I do. And maybe you will too.
To do it yourself, copy and paste the above URL; you can replace the text after “geolocation=” with pretty much anything, though anything too long will be replaced with default text unfortunately.
Edit: The irony of what this has done to my Google adverts is appreciated.