A very popular nickname that started in South Carolina due to a diss track released by a high school student. People go around and call other girls "Katie Wadie" as an insult for when a girl talks shit but has no balls to fight.
"Wadiyatalkinabeet" is a word used by Sassy the Sasquatch in The Big Lez Show when he does not know what the other person is talking about or he is confused.