JITT Share definition Flag Acronym for Jerk/Jick in Training Trainer. The one who takes over this position must be the ultimate jerk/jick. Ashley is the JITT, because she counts herself twice, in the circle. JITT by punkie078 October 5, 2005 0 0 Get merch Get the JITT mug. Buy Now — $32.95 See more merch