Twitfart Share definition Flag When you start typing a tweet and forget what you were typing (similar to a brainfart when you forget what you were about to say) Dude, I just had a twitfart... totally forgot what I was tweeting! Twitfart by TheRealVoice September 24, 2011 0 0 Get merch Get the Twitfart mug. Buy Now — $32.95 See more merch