There was a thread over a year ago…I forget what the subject was about…but one of the posts was to a link to an image; an ad for personal lubricant like KY or Astroglide. A woman sitting cross-legged on a beach at sunrise/sunset. A fellow Doper’s child looked at the image and immediately said “owie owie OWIE!”, since said woman was sitting in front of one of those oversized cleats the big ships tie themselves to at port…the ad implying with this lube, you can take even the biggest …well, you know. 
Unfortunately, the link, http://www.nottingham.ac.uk/~ulzkls/Advertisement.htm , claims that the page has been moved to http://shoebucket.dhs.org/advertisement.html which is now dead.
You can see the image by going to the French (parody?) site:
http://212.43.196.62/pix/vignet_pictarch.php?theme=i&nom=Parodies%20(pubs,films,tv)&mini=0&numpage=1
and clicking on the thumbnail.
And, um, why, exactly, were you looking for this thread…?
On another board there’s a thread where we post interesting images, flashes, games, etc.