A person who constantly posts on twitter about things that no one else cares about or things that are irrelevant.
Over the past 5 minutes you have had 3 posts about your dog, 2 about your best friend, and 1 about your grades, your're such a Twitterfag.
by dj4800 December 15, 2011
1 more definition
a person on twitter who tweets gay things
Fuck that douche nozzle is such a twitter fag. He just tweeted "OMG I NEED to go for coffee!" or "I just drank this coffee" (with a link to a photograph of the coffee)
by tweeterfag December 14, 2009