Introducing Tweet Dialer ! It’s an intuitive, easy way to create and store hundreds of custom tweets to fit your everyday tweeting needs! It includes three levels of “dialers” that allow you to categorize your tweets into various categories (Channels) and sub-categories (Topics). 

Features include: 
-Storing tweets for use on later occasions. 
-Creating partial tweets that you can add additional content to later. 
-Customizing your “dialer” channels to help categorize various tweets. 
-Random tweet button that allows you to randomly select a tweet from your stored tweets. 
-Three categories of sample tweets such as “Funny Tweets”, “Funny State Laws”, and “Quick Tweets” to help you get into the rhythm 

Over 1000 User defined tweets 

Try it for FREE:
iPhone: 
http://itunes.apple.com/us/app/tweet-dialer/id548215193?ls=1&mt=8

iPad: 
http://itunes.apple.com/us/app/tweet-dialer-hd/id549072184?ls=1&mt=8

P.S. This has nothing to do with Flappy Bird