This isn't possible. You're required to submit your email address and choose a username and password.
Make sure you are typing your username/email address and password correctly. If you can't remember your password, you can use the password reminder service. If you still can't get in to your account then you can email Twitter support for further assistance.
You make a username and password so you should know it.
You should make sure that you are typing both correctly. If you still can't log in then use the "Forgotten Password" and "Forgotten Username" links to double check you're using the correct information. If this doesn't solve the problem then you should contact Twitter Support.
All you do is login with what ever username or password you want and that is your username and password.
Its simple,go to twitter.com and then type your name and e-mail,choose a password and username and then confirm your email-you're done.
Make sure you're typing your username and password correctly. If you still can't log in, email the help team who can help you.
By Twitter! His twitter username is @ImTaylorLautner
by entering my name & password
to make my username and password
You are asked to provide a username, password and your email address. Then, when you log in, you can tweet and "follow" people as well as being "followed" by others.
make a username and password.
After you start a game you can click on the save button in the bottom right corner then enter your username and password.