So Twitter has launched "First Tweet" - a simple website where you can find out... guess?
Your first Tweet.
Obviously it's provoking a huge amount of vanity/attention this morning, as Twitter users rush to find out just how crazy and dumb they were way back in 2010 when they joined the site.
But we've also managed to take a step back and comb the site for the most important lessons to be gleamed from this incredible new tool.
Here are the top 9 things we've learned from Twitter's First Tweets.