Tav Rat Share definition Flag someone who spends most of their time at Tav for music, dancing, drinks, etc. Possibly underage & possibly using a fake ID. Related to the clubrat, but cooler. That girl is such a tav rat Tav Rat by Bella679 July 6, 2017 0 0 Get merch Get the Tav Rat mug. Buy Now — $32.95 See more merch