From a New York Times story by Elizabeth A. Harris headlined “Hip, Woke, Cool: It’s All Fodder for the Oxford Dictionary of African American English”:

The first time she heard Barbara Walters use the expression “shout out” on television, Tracey Weldon took note.

“I was like, ‘Oh my goodness, it has crossed over!’” said Weldon, a linguist who studies African American English.

English has many words and expressions like “shout out,” she said, which began in Black communities, made their way around the country and then through the English-speaking world. The process has been happening over generations, linguists say, adding an untold number of contributions to the language, including hip, nitty gritty, cool and woke.