The Rule of Tits Share definition Flag When you have the chance to grabs someones Tits, YOU GRAB THEM. Weither you be Straight, Lesbian, Gay, Male, Female, Single or Taken. YOU GRAB THEM Girl: Grab my tits!Boy: Okay *grabs tits*Girl's best friend: Ew no!Boy: YOU BROKE THE RULE OF TITS! The Rule of Tits by JustiLovesMeNot March 2, 2011 Get the The Rule of Tits mug.