You would have to be 13.
Tweet is 41 years old (birthdate: January 21, 1971).
There is no problem with reply to an old tweet by someone famous.
You can delete a tweet by hovering over it and then clicking on the trashcan icon.
Yes, a person can see your tweet, even if it's a day old. As long as the tweet hasn't been deleted, the other user can view it.
Tweet Tweet Tweety was created in 1951.
The duration of Tweet Tweet Tweety is 360.0 seconds.
Tweet Tweet My Lovely was created on 1998-05-19.
You receive a tweet when someone mentions you in their tweet.
tweet tweet, wee snawww, tweet
Tweet = share.
Tweet Tweet Tweety - 1951 was released on: USA: 15 December 1951
If you used the built in retweet function then you can't. If you did it the old way by typing 'RT' at the beginning of your tweet and copying and pasting the message you're retweeting, then simply delete your tweet.