A tweet that has gone wrong or completely bombed. Typically a joke statement that makes you look racist or like a general idiot. Often resulting in PR scramble and/or the removal of your presence from Twitter.
Justine really dropped a twitturd with that tweet about Africa. I think she meant it as a joke, but it was not well thought through, so she ended up pulling down her whole account and issuing a public apology.
by the coMANd'r January 15, 2014