Nice theory, BSM.
However the ad at the top of the forum is currently offering me "Awarding Wining Photos" which are "Stunning & Beautiful Images for Hindu, Muslim, Sikh, Tamlil Weddings". (*)
I'm English and I've been married for 22 years so there's unlikely to be anything in my demographics to mark me as a suitable target for an ad like that. I'm not a wedding photographer checking out the competition, I have no interest in Hindu etc weddings, I've never visited any site like that, and I'm using a new phone so I'm 100% sure nobody else has visited a site like that using this device.
I love a good conspiracy theory (and 30D bras - what's that all about??!) but sadly I think it's just Google and/or the advertiser making a cockup.
(*) I had to make a special effort to stop my phone correcting all the spelling mistakes in that ad!