Is "Knocked Up" Racist?

There’s a rumor going around social networks that “knocked up” traces back to American slave trading. Is there any evidence for that etymology? Visit ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Lexicon Valley⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠. A Booksmart Studios production. Episode 251: "Is 'Knocked Up' Racist?" With John McWhorter. Produced and edited by Mike Vuolo. All rights reserved. Learn more about your ad choices. Visit megaphone.fm/adchoices