It's Twitter's eighth birthday, folks, which means a little nostalgia is in order. The now-gigantic company just put out a "first tweet" (er, #FirstTweet) tool that makes it easy to find your first-ever 140-character missive. Odds are, your first tweet was something ironic about how you were trying out this whole Twitter thing. Odds are, you were really bad at Twitter at first. Well, probably, anyway. Yours truly clearly had the hang of it from the get-go.