A phrase referring to a Battle Cry in which one tatters, usually for sporting events or fights. Usually accompanied by a fist to forearm bump creating a diagonal "T" sign with one's arms. Also a song by a NorthWest based rap group called "CityLine"
"Oh we are going to smash the Gators tonight. Its Tatter Time"
"What did Zack say about me? Its about to be Tatter Time."