Evern wonder what the folks in your town are tweeting about? Head to Happn.in, which shows the popular Twitter topics for dozens of major cities worldwide.

Just to clarify, this isn't a city-specific search engine. If you merely want to find all tweets pertaining to, say, Las Vegas, any number of Twitter search tools (including Twittter's own) can reveal that information.

Rather, Happn.in shows you the five most common tweets originating from any given city. (Huh. The folks in Atlanta apparently have a lot to say on the subject of long hair.) Click any of the topics to see the actual tweets.

You can also search for phrases or users that have appeared on Happn.in.

Okay, so there's not a lot of practical value here. But anyone into Twitter or, say, anthropology may find this an interesting peek at the tweety underbelly of cities around the globe.

So fess up: What weird and interesting things are being tweeted about in your city? Here in Detroit, there's some discussion of the "bacon dress," whatever that is. Well, we do love us some bacon.