Go on pc. Copy/paste it to an email. Send the email to yourself. Open the email on itouch. Copy/paste from email to writng app.
Oh I like his idea better except you need a computer. If u don't have one just get your friend to email to you
Another idea: Go on the comp. Copy paste it to an e-mail. And send it to yourself so you have it on your i-pod (copy from e-mail)