"I went pee pee on the potty - EEEEE

Three or four times in the last couple of days, our two-year-old granddaughter Alexa called from Queen Creek, Arizona; with the assistance of her mother,Niki,and announced with a loud happy voice, “I went pee-pee in the potty” and jabbered on about other stuff, some unintelligible. She has to tell me and “Grandma.” After telling me, she yells out a loud “EEEEE” or however you spell a loud funny yell. She expects me to “EEEEE” back to her. She laughs when I do. It is something I taught her on one of my trips to Arizona to visit them.