Google launched a new feature in Japan called Google Dajare. Dajare is similar to an English pun. This new Google service expands Google's mission to organize the worlds information by also "organizing the world's laughter".
To see the new feature in action, check out these search results for "domestic flights" on google.co.jp.
Of course, this is very likely just an April Fools joke, as April 1st has arrived in Japan already.