A new feature is introduced by Twitter in its 8th birthday. Now you could find the first twit of any twitter user. You have to type www.first-tweets.com
in address bar and the site will be redirected to another place https://www.discover.twitter.com/first-tweet
page. You have to enter the user name and twitter will fetch the first twit of that user. It is very interesting and exciting also. So follow the video to do it yourself.