1. v. The act of Tweeting. Often used as a hash-tag to indicate that there was no meaning for the Tweet aside from the desire to have Tweeted.
2. To describe the act of one using (flicking) their Twitter account.
I just saw a rhinoceros today at the zoo. #twitterflicking. Man, Betty flicks her twitter like 50 times a day. "Whatcha doin on your phone there?" "Aaww nuthin, just twitterflicking."