Many years ago I audited my friend's ~~AdWords~~ (I meant Google Search Ad) for his East Tennessee barn wedding venue. The local mom & pop SEO shop that set it up hadn't targeted any geo at all. Something like 60% of the clicks came from Malaysia, IIRC. CPC was around $2.

I could never figure out how that would work, or why. I mean, was Google actually doing this? That is hard to believe. But, who else would a have motivation to do that? I still have no idea what was going on there.

edit: I haven't dealt with ads forever, what I meant is the Google ads that appear in google search.